diff --git a/.github/workflows/dres_rails.yml b/.github/workflows/dres_rails.yml
index 4976fd751d..936d966fed 100644
--- a/.github/workflows/dres_rails.yml
+++ b/.github/workflows/dres_rails.yml
@@ -41,13 +41,13 @@ jobs:
         ports:
           - 10011:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
-      postgres_12:
-        image: postgres:12
+      postgres_15:
+        image: postgres:15
         env:
           POSTGRES_DB: rails_event_store
           POSTGRES_PASSWORD: secret
         ports:
-          - 10012:5432
+          - 10015:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
     strategy:
       fail-fast: false
@@ -55,15 +55,15 @@ jobs:
         include:
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: binary
           - ruby_version: ruby-3.1
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: binary
           - ruby_version: ruby-3.0
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: binary
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
@@ -71,11 +71,11 @@ jobs:
             data_type: binary
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: json
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: jsonb
     steps:
       - uses: actions/checkout@v3
diff --git a/.github/workflows/ruby_event_store-active_record.yml b/.github/workflows/ruby_event_store-active_record.yml
index 27bae85f6f..89b1a0b266 100644
--- a/.github/workflows/ruby_event_store-active_record.yml
+++ b/.github/workflows/ruby_event_store-active_record.yml
@@ -47,13 +47,13 @@ jobs:
         ports:
           - 10011:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
-      postgres_12:
-        image: postgres:12
+      postgres_15:
+        image: postgres:15
         env:
           POSTGRES_DB: rails_event_store
           POSTGRES_PASSWORD: secret
         ports:
-          - 10012:5432
+          - 10015:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
       mysql_5:
         image: mysql:5
@@ -93,7 +93,7 @@ jobs:
             data_type: binary
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: binary
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
@@ -101,11 +101,11 @@ jobs:
             data_type: binary
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: json
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: jsonb
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
diff --git a/.github/workflows/ruby_event_store-rom.yml b/.github/workflows/ruby_event_store-rom.yml
index a84ab9cc6d..caba690a78 100644
--- a/.github/workflows/ruby_event_store-rom.yml
+++ b/.github/workflows/ruby_event_store-rom.yml
@@ -37,13 +37,13 @@ jobs:
         ports:
           - 10011:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
-      postgres_12:
-        image: postgres:12
+      postgres_15:
+        image: postgres:15
         env:
           POSTGRES_DB: rails_event_store
           POSTGRES_PASSWORD: secret
         ports:
-          - 10012:5432
+          - 10015:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
       mysql_5:
         image: mysql:5
@@ -79,7 +79,7 @@ jobs:
             data_type: text
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: text
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
@@ -87,11 +87,11 @@ jobs:
             data_type: text
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: json
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: jsonb
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
diff --git a/.github/workflows/ruby_event_store-sequel.yml b/.github/workflows/ruby_event_store-sequel.yml
index ebed210f76..33a66d5ebe 100644
--- a/.github/workflows/ruby_event_store-sequel.yml
+++ b/.github/workflows/ruby_event_store-sequel.yml
@@ -37,13 +37,13 @@ jobs:
         ports:
           - 10011:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
-      postgres_12:
-        image: postgres:12
+      postgres_15:
+        image: postgres:15
         env:
           POSTGRES_DB: rails_event_store
           POSTGRES_PASSWORD: secret
         ports:
-          - 10012:5432
+          - 10015:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
       mysql_5:
         image: mysql:5
@@ -79,7 +79,7 @@ jobs:
             data_type: text
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: text
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
@@ -87,11 +87,11 @@ jobs:
             data_type: text
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: json
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
-            database_url: postgres://postgres:secret@localhost:10012/rails_event_store?pool=5
+            database_url: postgres://postgres:secret@localhost:10015/rails_event_store?pool=5
             data_type: jsonb
           - ruby_version: ruby-3.2
             bundle_gemfile: Gemfile
diff --git a/support/ci/db.yaml.erb b/support/ci/db.yaml.erb
index 8626bba2a8..ce17a9aa30 100644
--- a/support/ci/db.yaml.erb
+++ b/support/ci/db.yaml.erb
@@ -43,13 +43,13 @@ jobs:
         ports:
           - 10011:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
-      postgres_12:
-        image: postgres:12
+      postgres_15:
+        image: postgres:15
         env:
           POSTGRES_DB: rails_event_store
           POSTGRES_PASSWORD: secret
         ports:
-          - 10012:5432
+          - 10015:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
       mysql_5:
         image: mysql:5
diff --git a/support/ci/dres_rails.yaml.erb b/support/ci/dres_rails.yaml.erb
index ed6f9ac02b..130bcb3abb 100644
--- a/support/ci/dres_rails.yaml.erb
+++ b/support/ci/dres_rails.yaml.erb
@@ -37,13 +37,13 @@ jobs:
         ports:
           - 10011:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
-      postgres_12:
-        image: postgres:12
+      postgres_15:
+        image: postgres:15
         env:
           POSTGRES_DB: rails_event_store
           POSTGRES_PASSWORD: secret
         ports:
-          - 10012:5432
+          - 10015:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
     strategy:
       fail-fast: false
diff --git a/support/ci/generate b/support/ci/generate
index 66cdfd2e69..34e485220c 100755
--- a/support/ci/generate
+++ b/support/ci/generate
@@ -35,8 +35,8 @@ class CI
     SQLITE = "sqlite:db.sqlite3",
     SQLITE3 = "sqlite3:db.sqlite3",
     POSTGRES = [
-      POSTGRES_12 =
-        "postgres://postgres:secret@localhost:10012/rails_event_store?pool=5",
+      POSTGRES_15 =
+        "postgres://postgres:secret@localhost:10015/rails_event_store?pool=5",
       POSTGRES_11 =
         "postgres://postgres:secret@localhost:10011/rails_event_store?pool=5"
     ],
diff --git a/support/ci/rom.yaml.erb b/support/ci/rom.yaml.erb
index 4bd7c0dcd6..1829383eab 100644
--- a/support/ci/rom.yaml.erb
+++ b/support/ci/rom.yaml.erb
@@ -33,13 +33,13 @@ jobs:
         ports:
           - 10011:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
-      postgres_12:
-        image: postgres:12
+      postgres_15:
+        image: postgres:15
         env:
           POSTGRES_DB: rails_event_store
           POSTGRES_PASSWORD: secret
         ports:
-          - 10012:5432
+          - 10015:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
       mysql_5:
         image: mysql:5