diff --git a/test/Dockerfile.bionic b/test/Dockerfile.bionic
index aee83205f..9a7cb8a59 100644
--- a/test/Dockerfile.bionic
+++ b/test/Dockerfile.bionic
@@ -45,7 +45,7 @@ RUN install-tool helm v3.7.1
 # renovate: datasource=adoptium-java lookupName=java-jre
 RUN install-tool java 11.0.13+8
 # renovate: datasource=gradle-version lookupName=gradle versioning=gradle
-RUN install-tool gradle 7.2
+RUN install-tool gradle 7.3
 
 # renovate: datasource=github-releases lookupName=NixOS/nix
 RUN install-tool nix 2.3.10
diff --git a/test/java/Dockerfile b/test/java/Dockerfile
index 7ab2728d0..001399fc9 100644
--- a/test/java/Dockerfile
+++ b/test/java/Dockerfile
@@ -51,7 +51,7 @@ FROM base as testb
 RUN install-tool java-jre 11.0.13+8
 
 # renovate: datasource=gradle-version versioning=gradle
-RUN install-tool gradle 7.2
+RUN install-tool gradle 7.3
 
 USER 1000
 
@@ -80,7 +80,7 @@ ARG APT_HTTP_PROXY
 RUN install-tool java 8.0.312+7
 
 # renovate: datasource=gradle-version versioning=gradle
-RUN install-tool gradle 7.2
+RUN install-tool gradle 7.3
 
 #--------------------------------------
 # test: java 16 (non-root)