diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9243ef82..4f04ef73 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,7 +40,7 @@ jobs:
       fail-fast: false
       matrix:
         # https://www.cockroachlabs.com/docs/releases/release-support-policy
-        crdb: [v23.2, v24.1, v24.3]
+        crdb: [v23.2, v24.1, v24.3, v25.1]
         ruby: ["3.4"]
     name: Test (crdb=${{ matrix.crdb }} ruby=${{ matrix.ruby }})
     steps:
@@ -53,6 +53,8 @@ jobs:
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
+      - name: Show Rails version
+        run: bundle info rails
       - name: Install and Start Cockroachdb
         run: |
           # Download CockroachDB
diff --git a/test/config.yml b/test/config.yml
index 3b3de0be..f554f02c 100644
--- a/test/config.yml
+++ b/test/config.yml
@@ -1,22 +1,20 @@
 default_connection: cockroachdb
 connections:
   cockroachdb:
-    arunit:
+    arunit: &arunit
       min_messages: warning
       host: 127.0.0.1
       port: 26257
       user: root
       disable_cockroachdb_telemetry: true
+      # `autocommit_before_ddl` changed to default true in CockroachDB v25.1.
+      # This does not work with active record's test suite.
+      #
+      # This options keyword is referenced here in libpq:
+      # https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNECT-OPTIONS
+      options: "-c autocommit_before_ddl=false"
     arunit_without_prepared_statements:
-      min_messages: warning
+      <<: *arunit
       prepared_statements: false
-      host: 127.0.0.1
-      port: 26257
-      user: root
-      disable_cockroachdb_telemetry: true
     arunit2:
-      min_messages: warning
-      host: 127.0.0.1
-      port: 26257
-      user: root
-      disable_cockroachdb_telemetry: true
+      <<: *arunit