diff --git a/packages/destination-actions/src/destinations/amplitude/__tests__/amplitude.test.ts b/packages/destination-actions/src/destinations/amplitude/__tests__/amplitude.test.ts
index 374c9490bd0..6e39af0ee25 100644
--- a/packages/destination-actions/src/destinations/amplitude/__tests__/amplitude.test.ts
+++ b/packages/destination-actions/src/destinations/amplitude/__tests__/amplitude.test.ts
@@ -13,7 +13,11 @@ describe('Amplitude', () => {
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
 
-      const responses = await testDestination.testAction('logPurchase', { event, useDefaultMappings: true })
+      const mapping = {
+        library2: {}
+      }
+
+      const responses = await testDestination.testAction('logPurchase', { event, mapping, useDefaultMappings: true })
       expect(responses.length).toBe(1)
       expect(responses[0].status).toBe(200)
       expect(responses[0].data).toMatchObject({})
@@ -29,6 +33,101 @@ describe('Amplitude', () => {
       })
     })
 
+    it('should work with library2.behavior and platform.behavior fields set to use_mapping', async () => {
+      const event = createTestEvent({ timestamp, event: 'Test Event' })
+
+      event.context = event.context || {}
+      event.context.library = { name: 'custom-library-name', version: '1.0.0'}
+      event.context.device = event.context.device || {}
+      event.context.device.type = 'custom-device-type'
+
+      nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
+
+      const mapping = {
+        library2: {
+          behavior: 'use_mapping',
+          mapping: { '@path': '$.context.library.name' }
+        }
+      }
+
+      const responses = await testDestination.testAction('logPurchase', { event, mapping, useDefaultMappings: true })
+      expect(responses.length).toBe(1)
+      expect(responses[0].status).toBe(200)
+      expect(responses[0].data).toMatchObject({})
+      expect(responses[0].options.json).toEqual({
+        api_key: undefined,
+        events: [
+          {
+            city: "San Francisco",
+            country: "United States",
+            device_id: "anonId1234",
+            device_manufacturer: "Apple",
+            device_model: "iPhone",
+            device_type: "mobile",
+            event_properties: {},
+            event_type: "Test Event",
+            ip: "8.8.8.8",
+            language: "en-US",
+            library: "custom-library-name",
+            location_lat: 40.2964197,
+            location_lng: -76.9411617,
+            os_name: "iOS",
+            os_version: "9",
+            platform: "custom-device-type",
+            time: 1629213675449,
+            use_batch_endpoint: false,
+            user_id: "user1234",
+            user_properties: {}
+          }
+        ],
+        options: undefined
+      })
+    })
+
+    it('should work with platform.behavior field not set', async () => {
+      const event = createTestEvent({ timestamp, event: 'Test Event' })
+
+      event.context = event.context || {}
+      event.context.library = { name: 'custom-library-name', version: '1.0.0'}
+      event.context.device = event.context.device || {}
+      event.context.device.type = 'ios'
+
+      nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
+
+      const responses = await testDestination.testAction('logPurchase', { event, useDefaultMappings: true })
+      expect(responses.length).toBe(1)
+      expect(responses[0].status).toBe(200)
+      expect(responses[0].data).toMatchObject({})
+      expect(responses[0].options.json).toEqual({
+        api_key: undefined,
+        events: [
+          {
+            city: "San Francisco",
+            country: "United States",
+            device_id: "anonId1234",
+            device_manufacturer: "Apple",
+            device_model: "iPhone",
+            device_type: "mobile",
+            event_properties: {},
+            event_type: "Test Event",
+            ip: "8.8.8.8",
+            language: "en-US",
+            library: "custom-library-name",
+            location_lat: 40.2964197,
+            location_lng: -76.9411617,
+            os_name: "iOS",
+            os_version: "9",
+            platform: "iOS",
+            time: 1629213675449,
+            use_batch_endpoint: false,
+            user_id: "user1234",
+            user_properties: {}
+          }
+        ],
+        options: undefined
+      })
+    })
+
     it('should change casing for device type when value is ios', async () => {
       const event = createTestEvent({
         event: 'Test Event',
@@ -173,7 +272,10 @@ describe('Amplitude', () => {
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
 
-      const responses = await testDestination.testAction('logPurchase', { event, useDefaultMappings: true })
+      const mapping = {
+        library2: {}
+      }
+      const responses = await testDestination.testAction('logPurchase', { event, mapping, useDefaultMappings: true })
       expect(responses.length).toBe(1)
       expect(responses[0].status).toBe(200)
       expect(responses[0].options.json).toMatchObject({
@@ -367,7 +469,8 @@ describe('Amplitude', () => {
         }
       })
       const mapping = {
-        userAgentParsing: true
+        userAgentParsing: true,
+        library2: {}
       }
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
       const responses = await testDestination.testAction('logPurchase', { event, mapping, useDefaultMappings: true })
@@ -414,7 +517,10 @@ describe('Amplitude', () => {
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
 
-      const responses = await testDestination.testAction('logPurchase', { event, useDefaultMappings: true })
+      const mapping = {
+        library2: {}
+      }
+      const responses = await testDestination.testAction('logPurchase', { event, mapping, useDefaultMappings: true })
 
       expect(responses.length).toBe(1)
       expect(responses[0].status).toBe(200)
@@ -468,7 +574,10 @@ describe('Amplitude', () => {
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
 
-      const responses = await testDestination.testAction('logPurchase', { event, useDefaultMappings: true })
+      const mapping = {
+        library2: {}
+      }
+      const responses = await testDestination.testAction('logPurchase', { event, mapping, useDefaultMappings: true })
 
       expect(responses.length).toBe(1)
       expect(responses[0].status).toBe(200)
@@ -583,9 +692,12 @@ describe('Amplitude', () => {
             'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36'
         }
       })
+      
       const mapping = {
-        userAgentParsing: true
+        userAgentParsing: true,
+        library2: {}
       }
+
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
       const responses = await testDestination.testAction('logPurchase', { event, mapping, useDefaultMappings: true })
       expect(responses.length).toBe(1)
@@ -633,7 +745,8 @@ describe('Amplitude', () => {
       })
 
       const mapping = {
-        trackRevenuePerProduct: true
+        trackRevenuePerProduct: true,
+        library2: {}
       }
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
@@ -690,7 +803,8 @@ describe('Amplitude', () => {
       })
 
       const mapping = {
-        trackRevenuePerProduct: true
+        trackRevenuePerProduct: true,
+        library2: {}
       }
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
@@ -744,7 +858,8 @@ describe('Amplitude', () => {
       })
 
       const mapping = {
-        trackRevenuePerProduct: true
+        trackRevenuePerProduct: true,
+        library2: {}
       }
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
@@ -842,6 +957,101 @@ describe('Amplitude', () => {
       })
     })
 
+    it('should work with library2.behavior and platform.behavior fields set to use_mapping', async () => {
+      const event = createTestEvent({ timestamp, event: 'Test Event' })
+
+      event.context = event.context || {}
+      event.context.library = { name: 'custom-library-name', version: '1.0.0'}
+      event.context.device = event.context.device || {}
+      event.context.device.type = 'custom-device-type'
+
+      nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
+
+      const mapping = {
+        library2: {
+          behavior: 'use_mapping',
+          mapping: { '@path': '$.context.library.name' }
+        }
+      }
+
+      const responses = await testDestination.testAction('logEvent', { event, mapping, useDefaultMappings: true })
+      expect(responses.length).toBe(1)
+      expect(responses[0].status).toBe(200)
+      expect(responses[0].data).toMatchObject({})
+      expect(responses[0].options.json).toEqual({
+        api_key: undefined,
+        events: [
+          {
+            city: "San Francisco",
+            country: "United States",
+            device_id: "anonId1234",
+            device_manufacturer: "Apple",
+            device_model: "iPhone",
+            device_type: "mobile",
+            event_properties: {},
+            event_type: "Test Event",
+            ip: "8.8.8.8",
+            language: "en-US",
+            library: "custom-library-name",
+            location_lat: 40.2964197,
+            location_lng: -76.9411617,
+            os_name: "iOS",
+            os_version: "9",
+            platform: "custom-device-type",
+            time: 1629213675449,
+            use_batch_endpoint: false,
+            user_id: "user1234",
+            user_properties: {}
+          }
+        ],
+        options: undefined
+      })
+    })
+
+    it('should work with platform.behavior field not set', async () => {
+      const event = createTestEvent({ timestamp, event: 'Test Event' })
+
+      event.context = event.context || {}
+      event.context.library = { name: 'custom-library-name', version: '1.0.0'}
+      event.context.device = event.context.device || {}
+      event.context.device.type = 'ios'
+
+      nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
+
+      const responses = await testDestination.testAction('logEvent', { event, useDefaultMappings: true })
+      expect(responses.length).toBe(1)
+      expect(responses[0].status).toBe(200)
+      expect(responses[0].data).toMatchObject({})
+      expect(responses[0].options.json).toEqual({
+        api_key: undefined,
+        events: [
+          {
+            city: "San Francisco",
+            country: "United States",
+            device_id: "anonId1234",
+            device_manufacturer: "Apple",
+            device_model: "iPhone",
+            device_type: "mobile",
+            event_properties: {},
+            event_type: "Test Event",
+            ip: "8.8.8.8",
+            language: "en-US",
+            library: "custom-library-name",
+            location_lat: 40.2964197,
+            location_lng: -76.9411617,
+            os_name: "iOS",
+            os_version: "9",
+            platform: "iOS",
+            time: 1629213675449,
+            use_batch_endpoint: false,
+            user_id: "user1234",
+            user_properties: {}
+          }
+        ],
+        options: undefined
+      })
+    })
+
     it('should change casing for device type when value is ios', async () => {
       const event = createTestEvent({
         event: 'Test Event',
@@ -929,8 +1139,11 @@ describe('Amplitude', () => {
       })
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
-
-      const responses = await testDestination.testAction('logEvent', { event, useDefaultMappings: true })
+      
+      const mapping = {
+        library2: {}
+      }
+      const responses = await testDestination.testAction('logEvent', { event, mapping, useDefaultMappings: true })
       expect(responses.length).toBe(1)
       expect(responses[0].status).toBe(200)
       expect(responses[0].options.json).toMatchObject({
@@ -961,7 +1174,8 @@ describe('Amplitude', () => {
       const mapping = {
         revenue: {
           '@path': '$.properties.bitcoin_rev'
-        }
+        },
+        library2: {}
       }
 
       const responses = await testDestination.testAction('logEvent', { event, mapping, useDefaultMappings: true })
@@ -1074,7 +1288,8 @@ describe('Amplitude', () => {
         }
       })
       const mapping = {
-        userAgentParsing: true
+        userAgentParsing: true,
+        library2: {}
       }
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
       const responses = await testDestination.testAction('logEvent', { event, mapping, useDefaultMappings: true })
@@ -1120,8 +1335,10 @@ describe('Amplitude', () => {
       })
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
-
-      const responses = await testDestination.testAction('logEvent', { event, useDefaultMappings: true })
+      const mapping = {
+        library2: {}
+      }
+      const responses = await testDestination.testAction('logEvent', { event, mapping, useDefaultMappings: true })
 
       expect(responses.length).toBe(1)
       expect(responses[0].status).toBe(200)
@@ -1175,7 +1392,11 @@ describe('Amplitude', () => {
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
 
-      const responses = await testDestination.testAction('logEvent', { event, useDefaultMappings: true })
+      const mapping = {
+        library2: {}
+      }
+
+      const responses = await testDestination.testAction('logEvent', { event, mapping, useDefaultMappings: true })
 
       expect(responses.length).toBe(1)
       expect(responses[0].status).toBe(200)
@@ -1291,7 +1512,8 @@ describe('Amplitude', () => {
         }
       })
       const mapping = {
-        userAgentParsing: true
+        userAgentParsing: true,
+        library2: {}
       }
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
       const responses = await testDestination.testAction('logEvent', { event, mapping, useDefaultMappings: true })
@@ -1346,6 +1568,101 @@ describe('Amplitude', () => {
       })
     })
 
+    it('should work with library2.behavior and platform.behavior fields set to use_mapping', async () => {
+      const event = createTestEvent({ timestamp, event: 'Test Event' })
+
+      event.context = event.context || {}
+      event.context.library = { name: 'custom-library-name', version: '1.0.0'}
+      event.context.device = event.context.device || {}
+      event.context.device.type = 'custom-device-type'
+
+      nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
+
+      const mapping = {
+        library2: {
+          behavior: 'use_mapping',
+          mapping: { '@path': '$.context.library.name' }
+        }
+      }
+
+      const responses = await testDestination.testAction('logEventV2', { event, mapping, useDefaultMappings: true })
+      expect(responses.length).toBe(1)
+      expect(responses[0].status).toBe(200)
+      expect(responses[0].data).toMatchObject({})
+      expect(responses[0].options.json).toEqual({
+        api_key: undefined,
+        events: [
+          {
+            city: "San Francisco",
+            country: "United States",
+            device_id: "anonId1234",
+            device_manufacturer: "Apple",
+            device_model: "iPhone",
+            device_type: "mobile",
+            event_properties: {},
+            event_type: "Test Event",
+            ip: "8.8.8.8",
+            language: "en-US",
+            library: "custom-library-name",
+            location_lat: 40.2964197,
+            location_lng: -76.9411617,
+            os_name: "iOS",
+            os_version: "9",
+            platform: "custom-device-type",
+            time: 1629213675449,
+            use_batch_endpoint: false,
+            user_id: "user1234",
+            user_properties: {}
+          }
+        ],
+        options: undefined
+      })
+    })
+
+    it('should work with platform.behavior field not set', async () => {
+      const event = createTestEvent({ timestamp, event: 'Test Event' })
+
+      event.context = event.context || {}
+      event.context.library = { name: 'custom-library-name', version: '1.0.0'}
+      event.context.device = event.context.device || {}
+      event.context.device.type = 'ios'
+
+      nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
+
+      const responses = await testDestination.testAction('logEventV2', { event, useDefaultMappings: true })
+      expect(responses.length).toBe(1)
+      expect(responses[0].status).toBe(200)
+      expect(responses[0].data).toMatchObject({})
+      expect(responses[0].options.json).toEqual({
+        api_key: undefined,
+        events: [
+          {
+            city: "San Francisco",
+            country: "United States",
+            device_id: "anonId1234",
+            device_manufacturer: "Apple",
+            device_model: "iPhone",
+            device_type: "mobile",
+            event_properties: {},
+            event_type: "Test Event",
+            ip: "8.8.8.8",
+            language: "en-US",
+            library: "custom-library-name",
+            location_lat: 40.2964197,
+            location_lng: -76.9411617,
+            os_name: "iOS",
+            os_version: "9",
+            platform: "iOS",
+            time: 1629213675449,
+            use_batch_endpoint: false,
+            user_id: "user1234",
+            user_properties: {}
+          }
+        ],
+        options: undefined
+      })
+    })
+
     it('changes casing for device type when value is ios', async () => {
       const event = createTestEvent({
         event: 'Test Event',
@@ -1434,7 +1751,11 @@ describe('Amplitude', () => {
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
 
-      const responses = await testDestination.testAction('logEventV2', { event, useDefaultMappings: true })
+      const mapping = {
+        library2: {}
+      }
+
+      const responses = await testDestination.testAction('logEventV2', { event, mapping, useDefaultMappings: true })
       expect(responses.length).toBe(1)
       expect(responses[0].status).toBe(200)
       expect(responses[0].options.json).toMatchObject({
@@ -1465,7 +1786,8 @@ describe('Amplitude', () => {
       const mapping = {
         revenue: {
           '@path': '$.properties.bitcoin_rev'
-        }
+        },
+        library2: {}
       }
 
       const responses = await testDestination.testAction('logEventV2', { event, mapping, useDefaultMappings: true })
@@ -1578,7 +1900,8 @@ describe('Amplitude', () => {
         }
       })
       const mapping = {
-        userAgentParsing: true
+        userAgentParsing: true,
+        library2: {}
       }
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
       const responses = await testDestination.testAction('logEventV2', { event, mapping, useDefaultMappings: true })
@@ -1625,8 +1948,11 @@ describe('Amplitude', () => {
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
 
-      const responses = await testDestination.testAction('logEventV2', { event, useDefaultMappings: true })
+      const mapping = {
+        library2: {}
+      }
 
+      const responses = await testDestination.testAction('logEventV2', { event, mapping, useDefaultMappings: true })
       expect(responses.length).toBe(1)
       expect(responses[0].status).toBe(200)
       expect(responses[0].data).toMatchObject({})
@@ -1679,7 +2005,10 @@ describe('Amplitude', () => {
 
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
 
-      const responses = await testDestination.testAction('logEventV2', { event, useDefaultMappings: true })
+      const mapping = {
+        library2: {}
+      }
+      const responses = await testDestination.testAction('logEventV2', { event, mapping, useDefaultMappings: true })
 
       expect(responses.length).toBe(1)
       expect(responses[0].status).toBe(200)
@@ -1892,7 +2221,8 @@ describe('Amplitude', () => {
         }
       })
       const mapping = {
-        userAgentParsing: true
+        userAgentParsing: true,
+        library2: {}
       }
       nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
       const responses = await testDestination.testAction('logEventV2', { event, mapping, useDefaultMappings: true })
@@ -1938,7 +2268,8 @@ describe('Amplitude', () => {
       }
     })
     const mapping = {
-      userAgentParsing: false
+      userAgentParsing: false,
+      library2: {}
     }
     nock('https://api2.amplitude.com/2').post('/httpapi').reply(200, {})
     const responses = await testDestination.testAction('logEvent', { event, mapping, useDefaultMappings: true })
@@ -2062,7 +2393,8 @@ describe('Amplitude', () => {
       })
 
       const mapping = {
-        userAgentParsing: true
+        userAgentParsing: true,
+        library2: {}
       }
 
       nock('https://api2.amplitude.com').post('/identify').reply(200, {})
@@ -2203,7 +2535,8 @@ describe('Amplitude', () => {
       })
 
       const mapping = {
-        userAgentParsing: true
+        userAgentParsing: true,
+        library2: {}
       }
 
       nock('https://api2.amplitude.com').post('/identify').reply(200, {})
diff --git a/packages/destination-actions/src/destinations/amplitude/event-schema.ts b/packages/destination-actions/src/destinations/amplitude/event-schema.ts
index 2d2c8fac566..c34c2c7eb13 100644
--- a/packages/destination-actions/src/destinations/amplitude/event-schema.ts
+++ b/packages/destination-actions/src/destinations/amplitude/event-schema.ts
@@ -299,11 +299,39 @@ export const eventSchema: Record<string, InputField> = {
       'Amplitude will deduplicate subsequent events sent with this ID we have already seen before within the past 7 days. Amplitude recommends generating a UUID or using some combination of device ID, user ID, event type, event ID, and time.'
   },
   library: {
-    label: 'Library',
+    // hiding this field as it was the value from the field was never used correctly and has created confusion with users. 
+    label: 'HIDDEN: Library',
     type: 'string',
-    description: 'The name of the library that generated the event.',
+    description: 'HIDDEN: The name of the library that generated the event.',
+    unsafe_hidden: true,
     default: {
       '@path': '$.context.library.name'
     }
+  },
+  library2: {
+    label: 'Library Settings',
+    type: 'object',
+    description: 'Specifies the "library" value to send to Amplitude. Select "Use Mapping" to set the value from the "Library Mapping" field. "Legacy Behaviour" sets the value to "segment".',
+    defaultObjectUI: 'keyvalue',
+    properties: {
+      behavior: {
+        label: 'Behavior',
+        description: 'Configure how to set the library value.',
+        type: 'string',
+        choices: [
+          { label: 'Auto', value: 'auto' },
+          { label: 'Use Mapping', value: 'use_mapping' }
+        ],
+      },
+      mapping: {
+        label: 'Library Mapping',
+        description: 'The library value to send to Amplitude. Only used when the "Behavior" field is set to "Use Mapping".',
+        type: 'string'
+      }
+    }, 
+    default: {
+      behavior: 'use_mapping',
+      mapping: { '@path': '$.context.library.name' }
+    }
   }
 }
diff --git a/packages/destination-actions/src/destinations/amplitude/logEvent/generated-types.ts b/packages/destination-actions/src/destinations/amplitude/logEvent/generated-types.ts
index dd60578bfa2..62d045ef216 100644
--- a/packages/destination-actions/src/destinations/amplitude/logEvent/generated-types.ts
+++ b/packages/destination-actions/src/destinations/amplitude/logEvent/generated-types.ts
@@ -148,9 +148,22 @@ export interface Payload {
    */
   insert_id?: string
   /**
-   * The name of the library that generated the event.
+   * HIDDEN: The name of the library that generated the event.
    */
   library?: string
+  /**
+   * Specifies the "library" value to send to Amplitude. Select "Use Mapping" to set the value from the "Library Mapping" field. "Legacy Behaviour" sets the value to "segment".
+   */
+  library2?: {
+    /**
+     * Configure how to set the library value.
+     */
+    behavior?: string
+    /**
+     * The library value to send to Amplitude. Only used when the "Behavior" field is set to "Use Mapping".
+     */
+    mapping?: string
+  }
   /**
    * The list of products purchased.
    */
diff --git a/packages/destination-actions/src/destinations/amplitude/logEvent/index.ts b/packages/destination-actions/src/destinations/amplitude/logEvent/index.ts
index aa10e91d9d6..abf6237b2ed 100644
--- a/packages/destination-actions/src/destinations/amplitude/logEvent/index.ts
+++ b/packages/destination-actions/src/destinations/amplitude/logEvent/index.ts
@@ -182,6 +182,7 @@ const action: ActionDefinition<Settings, Payload> = {
       referrer,
       min_id_length,
       library,
+      library2,
       ...rest
     } = omit(payload, revenueKeys)
     const properties = rest as AmplitudeEvent
@@ -194,7 +195,7 @@ const action: ActionDefinition<Settings, Payload> = {
     if (library === 'analytics.js' && !properties.platform) {
       properties.platform = 'Web'
     }
-
+   
     if (time && dayjs.utc(time).isValid()) {
       properties.time = dayjs.utc(time).valueOf()
     }
@@ -222,7 +223,7 @@ const action: ActionDefinition<Settings, Payload> = {
         ...(includeRawUserAgent && { user_agent: userAgent }),
         // Make sure any top-level properties take precedence over user-agent properties
         ...removeUndefined(properties),
-        library: 'segment'
+        library: library2?.behavior === 'use_mapping' ? library2.mapping : 'segment'
       }
     ]
 
diff --git a/packages/destination-actions/src/destinations/amplitude/logEventV2/generated-types.ts b/packages/destination-actions/src/destinations/amplitude/logEventV2/generated-types.ts
index 787b698616a..b9407931c42 100644
--- a/packages/destination-actions/src/destinations/amplitude/logEventV2/generated-types.ts
+++ b/packages/destination-actions/src/destinations/amplitude/logEventV2/generated-types.ts
@@ -148,9 +148,22 @@ export interface Payload {
    */
   insert_id?: string
   /**
-   * The name of the library that generated the event.
+   * HIDDEN: The name of the library that generated the event.
    */
   library?: string
+  /**
+   * Specifies the "library" value to send to Amplitude. Select "Use Mapping" to set the value from the "Library Mapping" field. "Legacy Behaviour" sets the value to "segment".
+   */
+  library2?: {
+    /**
+     * Configure how to set the library value.
+     */
+    behavior?: string
+    /**
+     * The library value to send to Amplitude. Only used when the "Behavior" field is set to "Use Mapping".
+     */
+    mapping?: string
+  }
   /**
    * The list of products purchased.
    */
diff --git a/packages/destination-actions/src/destinations/amplitude/logEventV2/index.ts b/packages/destination-actions/src/destinations/amplitude/logEventV2/index.ts
index ef20b455231..6db5fd34921 100644
--- a/packages/destination-actions/src/destinations/amplitude/logEventV2/index.ts
+++ b/packages/destination-actions/src/destinations/amplitude/logEventV2/index.ts
@@ -223,6 +223,7 @@ const action: ActionDefinition<Settings, Payload> = {
       userAgentData,
       min_id_length,
       library,
+      library2,
       setOnce,
       setAlways,
       add,
@@ -271,7 +272,7 @@ const action: ActionDefinition<Settings, Payload> = {
         ...(includeRawUserAgent && { user_agent: userAgent }),
         // Make sure any top-level properties take precedence over user-agent properties
         ...removeUndefined(properties),
-        library: 'segment'
+        library: library2?.behavior === 'use_mapping' ? library2.mapping : 'segment'
       }
     ]
 
diff --git a/packages/destination-actions/src/destinations/amplitude/logPurchase/generated-types.ts b/packages/destination-actions/src/destinations/amplitude/logPurchase/generated-types.ts
index acc0a64d7c5..bac89df053b 100644
--- a/packages/destination-actions/src/destinations/amplitude/logPurchase/generated-types.ts
+++ b/packages/destination-actions/src/destinations/amplitude/logPurchase/generated-types.ts
@@ -152,9 +152,22 @@ export interface Payload {
    */
   insert_id?: string
   /**
-   * The name of the library that generated the event.
+   * HIDDEN: The name of the library that generated the event.
    */
   library?: string
+  /**
+   * Specifies the "library" value to send to Amplitude. Select "Use Mapping" to set the value from the "Library Mapping" field. "Legacy Behaviour" sets the value to "segment".
+   */
+  library2?: {
+    /**
+     * Configure how to set the library value.
+     */
+    behavior?: string
+    /**
+     * The library value to send to Amplitude. Only used when the "Behavior" field is set to "Use Mapping".
+     */
+    mapping?: string
+  }
   /**
    * The list of products purchased.
    */
diff --git a/packages/destination-actions/src/destinations/amplitude/logPurchase/index.ts b/packages/destination-actions/src/destinations/amplitude/logPurchase/index.ts
index 7db7dc8889e..9227f9ca4f7 100644
--- a/packages/destination-actions/src/destinations/amplitude/logPurchase/index.ts
+++ b/packages/destination-actions/src/destinations/amplitude/logPurchase/index.ts
@@ -234,6 +234,7 @@ const action: ActionDefinition<Settings, Payload> = {
       referrer,
       min_id_length,
       library,
+      library2,
       ...rest
     } = omit(payload, revenueKeys)
     const properties = rest as AmplitudeEvent
@@ -276,7 +277,7 @@ const action: ActionDefinition<Settings, Payload> = {
         ...removeUndefined(properties),
         // Conditionally track revenue with main event
         ...(products.length && trackRevenuePerProduct ? {} : getRevenueProperties(payload)),
-        library: 'segment'
+         library: library2?.behavior === 'use_mapping' ? library2.mapping : 'segment'
       }
     ]
 
@@ -288,7 +289,7 @@ const action: ActionDefinition<Settings, Payload> = {
         event_properties: product,
         event_type: 'Product Purchased',
         insert_id: properties.insert_id ? `${properties.insert_id}-${events.length + 1}` : undefined,
-        library: 'segment'
+        library: library2?.behavior === 'use_mapping' ? library2.mapping : 'segment'
       })
     }