diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 0f48b31..6d8b577 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.
diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index 7856e7e..a24fe0f 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -14,7 +14,8 @@ jobs:
       HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
 
     steps:
-    - uses: actions/checkout@v2
+    - name: Checkout
+      uses: actions/checkout@v4
     - name: Set up JDK 17
       uses: actions/setup-java@v1
       with:
diff --git a/.github/workflows/native-image.yml b/.github/workflows/native-image.yml
index c2c0117..d73d59b 100644
--- a/.github/workflows/native-image.yml
+++ b/.github/workflows/native-image.yml
@@ -13,7 +13,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - name: Checkout
+      uses: actions/checkout@v4
     - uses: graalvm/setup-graalvm@v1
       with:
         version: 'latest'
diff --git a/README.md b/README.md
index b0c7ec1..e22c495 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ Install and run [Redis] locally or on Docker.
 
 To run Redis in Docker:
 ```sh
-$ docker run -d -p 6379:6379 -e REDIS_PASSWORD=SuperSecretRedisPassword bitnami/redis:6.0.9
+$ docker run -d -p 6379:6379 -e REDIS_PASSWORD=SuperSecretRedisPassword bitnami/redis:7.2.3
 ```
 
 ##### Pre-requisite for Graal Native Image:
diff --git a/pom.xml b/pom.xml
index 4431ae0..900da49 100644
--- a/pom.xml
+++ b/pom.xml
@@ -72,12 +72,6 @@
 			<scope>test</scope>
 		</dependency>
 
-		<dependency>
-			<groupId>org.testcontainers</groupId>
-			<artifactId>junit-jupiter</artifactId>
-			<scope>test</scope>
-		</dependency>
-
 	</dependencies>
 
 	<build>
diff --git a/src/main/docker/docker-compose-jvm.yml b/src/main/docker/docker-compose-jvm.yml
index 1cc0c2b..fe98cdc 100644
--- a/src/main/docker/docker-compose-jvm.yml
+++ b/src/main/docker/docker-compose-jvm.yml
@@ -9,7 +9,7 @@ services:
             - spring-chat-2
             - spring-chat-3
     redis:
-        image: bitnami/redis:6.0.9
+        image: bitnami/redis:7.2.3
         environment:
             - REDIS_PASSWORD=SuperSecretRedisPassword
         ports:
diff --git a/src/main/docker/docker-compose.yml b/src/main/docker/docker-compose.yml
index 455ffcc..ec36a63 100644
--- a/src/main/docker/docker-compose.yml
+++ b/src/main/docker/docker-compose.yml
@@ -9,7 +9,7 @@ services:
             - spring-chat-2
             - spring-chat-3
     redis:
-        image: bitnami/redis:6.0.9
+        image: bitnami/redis:7.2.3
         environment:
             - REDIS_PASSWORD=SuperSecretRedisPassword
         ports: