diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index c8781ac..03dd791 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -31,8 +31,8 @@ jobs:
 #            experimental: true        
        
     steps:
-    - uses: actions/checkout@v2.3.4
-    - uses: actions/cache@v2
+    - uses: actions/checkout@v2.4.0
+    - uses: actions/cache@v2.1.5
       with:
         path: ~/.m2/repository
         key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
diff --git a/pom.xml b/pom.xml
index 66fa02f..a2fb58c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -461,7 +461,7 @@ under the License.
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>3.1.1</version>
+        <version>3.1.2</version>
         <configuration>
           <configLocation>${basedir}/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>
@@ -511,7 +511,7 @@ under the License.
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>2.7</version>
+        <version>3.1.2</version>
         <configuration>
           <configLocation>${basedir}/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>