diff --git a/.github/workflows/gradle_branch.yml b/.github/workflows/gradle_branch.yml
index a3a1d6096a..4e75e1f177 100644
--- a/.github/workflows/gradle_branch.yml
+++ b/.github/workflows/gradle_branch.yml
@@ -32,6 +32,6 @@ jobs:
     - name: Build RxJava
       run: ./gradlew build --stacktrace
     - name: Upload to Codecov  
-      uses: codecov/codecov-action@ab904c41d6ece82784817410c45d8b8c02684457 # v3.1.6
+      uses: codecov/codecov-action@f30e4959ba63075080d4f7f90cacc18d9f3fafd7 # v4.0.0
     - name: Generate Javadoc
       run: ./gradlew javadoc --stacktrace
diff --git a/.github/workflows/gradle_pr.yml b/.github/workflows/gradle_pr.yml
index a78f9df953..27872bfbd7 100644
--- a/.github/workflows/gradle_pr.yml
+++ b/.github/workflows/gradle_pr.yml
@@ -32,6 +32,6 @@ jobs:
     - name: Build RxJava
       run: ./gradlew build --stacktrace
     - name: Upload to Codecov  
-      uses: codecov/codecov-action@ab904c41d6ece82784817410c45d8b8c02684457 # v3.1.6
+      uses: codecov/codecov-action@f30e4959ba63075080d4f7f90cacc18d9f3fafd7 # v4.0.0
     - name: Generate Javadoc
       run: ./gradlew javadoc --stacktrace
diff --git a/.github/workflows/gradle_release.yml b/.github/workflows/gradle_release.yml
index 6dc8c6c7ab..c03ad1b1ce 100644
--- a/.github/workflows/gradle_release.yml
+++ b/.github/workflows/gradle_release.yml
@@ -43,7 +43,7 @@ jobs:
     - name: Build RxJava
       run: ./gradlew build --stacktrace --no-daemon
     - name: Upload to Codecov  
-      uses: codecov/codecov-action@ab904c41d6ece82784817410c45d8b8c02684457 # v3.1.6
+      uses: codecov/codecov-action@f30e4959ba63075080d4f7f90cacc18d9f3fafd7 # v4.0.0
     - name: Upload release
       run: ./gradlew -PreleaseMode=full publish --no-daemon --no-parallel --stacktrace
       env:
diff --git a/.github/workflows/gradle_snapshot.yml b/.github/workflows/gradle_snapshot.yml
index cd10374db2..68dcbf33df 100644
--- a/.github/workflows/gradle_snapshot.yml
+++ b/.github/workflows/gradle_snapshot.yml
@@ -47,7 +47,7 @@ jobs:
         ORG_GRADLE_PROJECT_mavenCentralUsername: ${{ secrets.SONATYPE_USER }}
         ORG_GRADLE_PROJECT_mavenCentralPassword: ${{ secrets.SONATYPE_PASSWORD }}
     - name: Upload to Codecov  
-      uses: codecov/codecov-action@ab904c41d6ece82784817410c45d8b8c02684457 # v3.1.6
+      uses: codecov/codecov-action@f30e4959ba63075080d4f7f90cacc18d9f3fafd7 # v4.0.0
     - name: Push Javadoc
       run: ./push_javadoc.sh
         # Define secrets at https://github.com/ReactiveX/RxJava/settings/secrets/actions