diff --git a/.github/workflows/linux-ruby-head.yml b/.github/workflows/linux-ruby-head.yml
index 35a0d1f..9968328 100644
--- a/.github/workflows/linux-ruby-head.yml
+++ b/.github/workflows/linux-ruby-head.yml
@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         ruby: [ 'head' ]
-        postgres: [ '16', '15', '14', '13', '12' ]
+        postgres: [ '18', '17', '16', '15', '14' ]
         os:
           - ubuntu-latest
     services:
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 0a09859..6bfc4ec 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -21,7 +21,7 @@ jobs:
         ruby: ${{ fromJson(needs.ruby-versions.outputs.versions) }}
         exclude:
           - ruby: head
-        postgres: [ '16', '15', '14', '13', '12' ]
+        postgres: [ '18', '17', '16', '15', '14' ]
         os:
           - ubuntu-latest
     services: