diff --git a/.github/workflows/test-crystal-shards.yml b/.github/workflows/test-crystal-shards.yml
index cc55899..a8b722a 100644
--- a/.github/workflows/test-crystal-shards.yml
+++ b/.github/workflows/test-crystal-shards.yml
@@ -98,7 +98,7 @@ jobs:
           cat ../build-cache-key
       - name: Build cache
         id: build-cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ./crystal/.build/crystal
@@ -124,7 +124,7 @@ jobs:
           make bin/shards CRYSTAL=../crystal/bin/crystal
           bin/shards --version
       - name: Artifact (with permissions)
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ./test-ecosystem
@@ -165,11 +165,11 @@ jobs:
     container: ubuntu:latest
     services:
       postgres:
-        image: postgres:16.1-alpine
+        image: postgres:16.4-alpine
         env:
           POSTGRES_HOST_AUTH_METHOD: trust
       mysql:
-        image: mysql:8.2
+        image: mysql:9.0
         env:
           MYSQL_ALLOW_EMPTY_PASSWORD: 'yes'
       redis:
@@ -177,7 +177,7 @@ jobs:
     needs: build
     steps:
       - name: Artifact (with permissions)
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ./test-ecosystem
@@ -199,11 +199,11 @@ jobs:
           ./test-ecosystem/scripts/apt-install-crystal-deps.sh
           ./test-ecosystem/scripts/00-install-bats.sh
       - name: Initialize postgres
-        uses: docker://postgres:16.1-alpine
+        uses: docker://postgres:16.4-alpine
         with:
           args: /bin/sh -c "psql -U postgres -h postgres -f ./test-ecosystem/scripts/pg-init.sql"
       - name: Initialize mysql
-        uses: docker://mysql:8.2
+        uses: docker://mysql:9.0
         with:
           args: /bin/sh -c "mysql -uroot -h mysql < ./test-ecosystem/scripts/mysql-init.sql"
       - name: Configure git