diff --git a/pgaudit/README.md b/pgaudit/README.md
index 98d004c..c82ccc1 100644
--- a/pgaudit/README.md
+++ b/pgaudit/README.md
@@ -54,6 +54,7 @@ spec:
     name: cluster-pgaudit
   extensions:
   - name: pgaudit
+    version: '18.0'
 ```
 
 ### 3. Verify installation
diff --git a/pgvector/README.md b/pgvector/README.md
index f3a16cd..e8949ec 100644
--- a/pgvector/README.md
+++ b/pgvector/README.md
@@ -49,6 +49,7 @@ spec:
     name: cluster-pgvector
   extensions:
   - name: vector
+    version: '0.8.1'
 ```
 
 ### 3. Verify installation
diff --git a/postgis/README.md b/postgis/README.md
index 83ae2ee..76793b9 100644
--- a/postgis/README.md
+++ b/postgis/README.md
@@ -50,6 +50,7 @@ spec:
     name: cluster-postgis
   extensions:
   - name: postgis
+    version: '3.6.1'
   - name: postgis_raster
   - name: postgis_sfcgal
   - name: fuzzystrmatch
diff --git a/postgis/test/check-extension.yaml b/postgis/test/check-extension.yaml
index 6cb4b61..76706ed 100644
--- a/postgis/test/check-extension.yaml
+++ b/postgis/test/check-extension.yaml
@@ -9,6 +9,8 @@ spec:
       containers:
       - name: data-test
         env:
+          - name: EXT_VERSION
+            value: ($values.version)
           - name: DB_URI
             valueFrom:
               secretKeyRef:
@@ -20,11 +22,11 @@ spec:
          - |
            set -e
            DB_URI=$(echo $DB_URI | sed "s|/\*|/|")
-           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'postgis')" -q)" = "t"
-           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'postgis_raster')" -q)" = "t"
-           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'postgis_sfcgal')" -q)" = "t"
            test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'fuzzystrmatch')" -q)" = "t"
-           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'address_standardizer')" -q)" = "t"
-           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'address_standardizer_data_us')" -q)" = "t"
-           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'postgis_tiger_geocoder')" -q)" = "t"
-           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'postgis_topology')" -q)" = "t"
+           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'postgis' AND extversion = '${EXT_VERSION}')" -q)" = "t"
+           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'postgis_raster' AND extversion = '${EXT_VERSION}')" -q)" = "t"
+           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'postgis_sfcgal' AND extversion = '${EXT_VERSION}')" -q)" = "t"
+           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'address_standardizer' AND extversion = '${EXT_VERSION}')" -q)" = "t"
+           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'address_standardizer_data_us' AND extversion = '${EXT_VERSION}')" -q)" = "t"
+           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'postgis_tiger_geocoder' AND extversion = '${EXT_VERSION}')" -q)" = "t"
+           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = 'postgis_topology' AND extversion = '${EXT_VERSION}')" -q)" = "t"
diff --git a/postgis/test/database.yaml b/postgis/test/database.yaml
index 96152d1..55fa0f9 100644
--- a/postgis/test/database.yaml
+++ b/postgis/test/database.yaml
@@ -9,6 +9,7 @@ spec:
     name: ($values.name)
   extensions:
   - name: ($values.sql_name)
+    version: ($values.version)
   - name: postgis_raster
   - name: postgis_sfcgal
   - name: fuzzystrmatch
diff --git a/test/check-extension.yaml b/test/check-extension.yaml
index ec19156..d0f2241 100644
--- a/test/check-extension.yaml
+++ b/test/check-extension.yaml
@@ -11,6 +11,8 @@ spec:
         env:
           - name: EXT_SQL_NAME
             value: ($values.sql_name)
+          - name: EXT_VERSION
+            value: ($values.version)
           - name: DB_URI
             valueFrom:
               secretKeyRef:
@@ -22,5 +24,5 @@ spec:
          - |
            set -e
            DB_URI=$(echo $DB_URI | sed "s|/\*|/|")
-           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = '${EXT_SQL_NAME}')" -q)" = "t"
-           echo "Extension '${EXT_SQL_NAME}' is installed!"
+           test "$(psql "$DB_URI" -tAc "SELECT EXISTS (SELECT FROM pg_catalog.pg_extension WHERE extname = '${EXT_SQL_NAME}' AND extversion = '${EXT_VERSION}')" -q)" = "t"
+           echo "Extension '${EXT_SQL_NAME} v${EXT_VERSION}' is installed!"
diff --git a/test/database.yaml b/test/database.yaml
index e204fa8..fd61499 100644
--- a/test/database.yaml
+++ b/test/database.yaml
@@ -9,3 +9,4 @@ spec:
     name: ($values.name)
   extensions:
   - name: ($values.sql_name)
+    version: ($values.version)