diff --git a/.github/workflows/pr-build-workflow.yml b/.github/workflows/pr-build-workflow.yml
index 418c807f..55a27aa1 100644
--- a/.github/workflows/pr-build-workflow.yml
+++ b/.github/workflows/pr-build-workflow.yml
@@ -12,15 +12,15 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 11
-      uses: actions/setup-java@v1
-      with:
-        java-version: 11
-        
-    - name: Run Gradle
-      uses: burrunan/gradle-cache-action@v1
-      env:
-        GRADLE_ENTERPRISE_URL: https://ge.spring.io/
-      with:
-        arguments: check
+      - uses: actions/checkout@v2
+      - name: Set up JDK 11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 11
+
+      - name: Run Gradle
+        uses: burrunan/gradle-cache-action@v1
+        env:
+          GRADLE_ENTERPRISE_URL: https://ge.spring.io/
+        with:
+          arguments: check
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 5b541382..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-dist: bionic
-language: java
-jdk: openjdk11
-install: true
-before_cache:
-  - rm -f $HOME/.gradle/caches/modules-2/modules-2.lock
-cache:
-  directories:
-    - $HOME/.gradle/caches/
-    - $HOME/.gradle/wrapper/
-env:
-    - GRADLE_ENTERPRISE_URL=https://ge.spring.io/
-script:
-  - ./gradlew check --no-daemon
diff --git a/build.gradle b/build.gradle
index b0fd77c6..711fd849 100644
--- a/build.gradle
+++ b/build.gradle
@@ -41,7 +41,7 @@ ext {
 	linkScmUrl = 'https://github.com/spring-projects/spring-kafka'
 	linkScmConnection = 'https://github.com/spring-projects/spring-kafka.git'
 	linkScmDevConnection = 'git@github.com:spring-projects/spring-kafka.git'
-	docResourcesVersion = '0.2.1.RELEASE'
+	docResourcesVersion = '0.2.4'
 
 
 	if (gitPresent) {
@@ -149,7 +149,7 @@ subprojects { subproject ->
 	eclipse.project.natures += 'org.springframework.ide.eclipse.core.springnature'
 
 	jacoco {
-		toolVersion = '0.8.5'
+		toolVersion = '0.8.6'
 	}
 
 	// dependencies that are common across all java projects
@@ -185,7 +185,7 @@ subprojects { subproject ->
 
 	checkstyle {
 		configDirectory.set(rootProject.file("src/checkstyle"))
-		toolVersion = '8.24'
+		toolVersion = '8.38'
 	}
 
 	jacocoTestReport {
@@ -220,7 +220,7 @@ subprojects { subproject ->
 	}
 
 	task updateCopyrights {
-		onlyIf { gitPresent && !System.getenv('TRAVIS') && !System.getenv('bamboo_buildKey') }
+		onlyIf { gitPresent && !System.getenv('GITHUB_ACTION') && !System.getenv('bamboo_buildKey') }
 		if (gitPresent) {
 			inputs.files(modifiedFiles.filter { f -> f.path.contains(subproject.name) })
 		}
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 4d9ca164..77c9546f 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,3 +3,4 @@ distributionPath=wrapper/dists
 distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
+distributionSha256Sum=3239b5ed86c3838a37d983ac100573f64c1f3fd8e1eb6c89fa5f9529b5ec091d
\ No newline at end of file
diff --git a/spring-kafka/src/main/java/org/springframework/kafka/core/KafkaProducerException.java b/spring-kafka/src/main/java/org/springframework/kafka/core/KafkaProducerException.java
index 4060a849..30a3d1a0 100644
--- a/spring-kafka/src/main/java/org/springframework/kafka/core/KafkaProducerException.java
+++ b/spring-kafka/src/main/java/org/springframework/kafka/core/KafkaProducerException.java
@@ -51,7 +51,7 @@ public class KafkaProducerException extends KafkaException {
 	 */
 	@SuppressWarnings("unchecked")
 	public <K, V> ProducerRecord<K, V> getFailedProducerRecord() {
-		return (ProducerRecord<K, V>) producerRecord;
+		return (ProducerRecord<K, V>) this.producerRecord;
 	}
 
 }
diff --git a/src/checkstyle/checkstyle.xml b/src/checkstyle/checkstyle.xml
index 39a78d8c..74d850ba 100644
--- a/src/checkstyle/checkstyle.xml
+++ b/src/checkstyle/checkstyle.xml
@@ -13,9 +13,7 @@
 		<property name="headerFile" value="${config_loc}/checkstyle-header.txt"/>
 		<property name="fileExtensions" value="java"/>
 	</module>
-	<module name="NewlineAtEndOfFile">
-		<property name="lineSeparator" value="lf"/>
-	</module>
+	<module name="NewlineAtEndOfFile"/>
 
 	<!-- TreeWalker Checks -->
 	<module name="TreeWalker">
@@ -111,7 +109,7 @@
 			<property name="authorFormat" value=".+\s.+"/>
 		</module>
 		<module name="JavadocMethod">
-			<property name="allowMissingJavadoc" value="true"/>
+			<property name="scope" value="public"/>
 		</module>
 		<module name="JavadocVariable">
 			<property name="scope" value="public"/>