diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eb7ae74..bf12b6a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        stack: ["heroku-20", "heroku-22"]
+        stack: ["heroku-20", "heroku-22", "heroku-24"]
     env:
       HATCHET_APP_LIMIT: 100
       HATCHET_EXPENSIVE_MODE: 1
@@ -85,12 +85,12 @@ jobs:
     name: "Unit Tests (${{ matrix.stack }})"
     runs-on: ubuntu-22.04
     container:
-      image: "${{ fromJson('{ \"heroku-20\": \"heroku/heroku:20\", \"heroku-22\": \"heroku/heroku:22\" }')[matrix.stack] }}"
+      image: "${{ fromJson('{ \"heroku-20\": \"heroku/heroku:20\", \"heroku-22\": \"heroku/heroku:22\", \"heroku-24\": \"heroku/heroku:24\" }')[matrix.stack] }}"
       env:
         STACK: ${{ matrix.stack }}
     strategy:
       matrix:
-        stack: ["heroku-20", "heroku-22"]
+        stack: ["heroku-20", "heroku-22", "heroku-24"]
     steps:
       - uses: actions/checkout@v4
       - run: test/unit
diff --git a/test/spec/db_spec.rb b/test/spec/db_spec.rb
index 3b652ac..f1b6934 100644
--- a/test/spec/db_spec.rb
+++ b/test/spec/db_spec.rb
@@ -8,6 +8,8 @@
           set_java_version(DEFAULT_OPENJDK_VERSION)
         end
 
+        app.add_database()
+
         app.deploy do
           expect(app.output).to include("Installing OpenJDK #{DEFAULT_OPENJDK_VERSION}")
           expect(app.output).to include("Installing Maven")
diff --git a/test/spec/java_spec.rb b/test/spec/java_spec.rb
index b2dd0d0..63e184d 100644
--- a/test/spec/java_spec.rb
+++ b/test/spec/java_spec.rb
@@ -9,6 +9,8 @@
             set_java_version(openjdk_version)
           end
 
+          app.add_database()
+
           app.deploy do
             expect(app.output).to include("Installing OpenJDK #{openjdk_version}")
             expect(app.output).to include("BUILD SUCCESS")
diff --git a/test/spec/maven_spec.rb b/test/spec/maven_spec.rb
index 5976d09..7782349 100644
--- a/test/spec/maven_spec.rb
+++ b/test/spec/maven_spec.rb
@@ -25,6 +25,8 @@
           set_maven_version("3.2.5")
         end
 
+        app.add_database()
+
         app.deploy do
           expect(app.output).to include("Installing Maven 3.2.5")
           expect(app.output).not_to include("BUILD FAILURE")
diff --git a/test/spec/spec_helper.rb b/test/spec/spec_helper.rb
index 3e9ddc5..67140f9 100644
--- a/test/spec/spec_helper.rb
+++ b/test/spec/spec_helper.rb
@@ -3,9 +3,7 @@
 require "hatchet"
 require "java-properties"
 
-# Omitting 1.7 here since most example projects used in testing are not
-# compatible with 1.7.
-OPENJDK_VERSIONS=%w(1.8 11 13 15)
+OPENJDK_VERSIONS=%w(1.8 11 17 21)
 DEFAULT_OPENJDK_VERSION="1.8"
 
 RSpec.configure do |config|