diff --git a/internal/provider/connection/model.go b/internal/provider/connection/model.go
index 2f33acd..5055f56 100644
--- a/internal/provider/connection/model.go
+++ b/internal/provider/connection/model.go
@@ -46,9 +46,10 @@ type filterRuleProperty struct {
 }
 
 type retryRule struct {
-	Count    types.Int64  `tfsdk:"count"`
-	Interval types.Int64  `tfsdk:"interval"`
-	Strategy types.String `tfsdk:"strategy"`
+	Count               types.Int64  `tfsdk:"count"`
+	Interval            types.Int64  `tfsdk:"interval"`
+	Strategy            types.String `tfsdk:"strategy"`
+	ResponseStatusCodes types.List   `tfsdk:"response_status_codes"`
 }
 
 type transformRule struct {
diff --git a/internal/provider/connection/schema_v1.go b/internal/provider/connection/schema_v1.go
index 1d21ff5..e53a23a 100644
--- a/internal/provider/connection/schema_v1.go
+++ b/internal/provider/connection/schema_v1.go
@@ -138,6 +138,11 @@ func schemaAttributesV1() map[string]schema.Attribute {
 								MarkdownDescription: `must be one of ["linear", "exponential"]` + "\n" +
 									`Algorithm to use when calculating delay between retries`,
 							},
+							"response_status_codes": schema.ListAttribute{
+								Optional:    true,
+								ElementType: types.StringType,
+								Description: `HTTP codes to retry on. Accepts: range expressions (e.g., "400-499", ">400"), specific codes (e.g., 404), and exclusions (e.g., "!401"). Example: ["500-599", ">400", 404, "!401"]`,
+							},
 						},
 					},
 					"transform_rule": schema.SingleNestedAttribute{
diff --git a/internal/provider/connection/sdk.go b/internal/provider/connection/sdk.go
index 242535b..4b147e8 100644
--- a/internal/provider/connection/sdk.go
+++ b/internal/provider/connection/sdk.go
@@ -409,6 +409,15 @@ func rulesToAPI(ctx context.Context, rules []rule) ([]interface{}, error) {
 				rule["interval"] = ruleItem.RetryRule.Interval.ValueInt64()
 			}
 
+			responseStatusCodesFieldsSet := !ruleItem.RetryRule.ResponseStatusCodes.IsNull() && !ruleItem.RetryRule.ResponseStatusCodes.IsUnknown()
+			if responseStatusCodesFieldsSet {
+				responseStatusCodes := []string{}
+				ruleItem.RetryRule.ResponseStatusCodes.ElementsAs(ctx, &responseStatusCodes, false)
+				if len(responseStatusCodes) > 0 {
+					rule["response_status_codes"] = responseStatusCodes
+				}
+			}
+
 			result = append(result, rule)
 		}
 
@@ -554,6 +563,19 @@ func rulesFromAPI(rules []interface{}) []rule {
 			} else {
 				retryRule.Interval = types.Int64Null()
 			}
+			if responseStatusCodes, ok := ruleMap["response_status_codes"].([]interface{}); ok {
+				statusCodeExpressions := []types.String{}
+				for _, expression := range responseStatusCodes {
+					if expressionStr, ok := expression.(string); ok {
+						statusCodeExpressions = append(statusCodeExpressions, types.StringValue(expressionStr))
+					}
+				}
+				if len(statusCodeExpressions) > 0 {
+					retryRule.ResponseStatusCodes, _ = types.ListValueFrom(context.Background(), types.StringType, statusCodeExpressions)
+				} else {
+					retryRule.ResponseStatusCodes = types.ListNull(types.StringType)
+				}
+			}
 
 			result = append(result, rule{RetryRule: retryRule})
 
diff --git a/internal/provider/connection/testdata/with_retry_rule_with_codes.tf b/internal/provider/connection/testdata/with_retry_rule_with_codes.tf
new file mode 100644
index 0000000..4522fa5
--- /dev/null
+++ b/internal/provider/connection/testdata/with_retry_rule_with_codes.tf
@@ -0,0 +1,27 @@
+resource "hookdeck_source" "test_%[1]s" {
+  name = "test-source-%[1]s"
+}
+
+resource "hookdeck_destination" "test_%[1]s" {
+  name = "test-destination-%[1]s"
+  config = jsonencode({
+    url = "https://mock.hookdeck.com"
+  })
+}
+
+resource "hookdeck_connection" "test_%[1]s" {
+  name           = "test-connection-retry-%[1]s"
+  source_id      = hookdeck_source.test_%[1]s.id
+  destination_id = hookdeck_destination.test_%[1]s.id
+
+  rules = [
+    {
+      retry_rule = {
+        strategy = "exponential"
+        count    = 5
+        interval = 1000
+        response_status_codes = ["500-599"]
+      }
+    }
+  ]
+}