diff --git a/test/Dockerfile.distro b/test/Dockerfile.distro
index 90937e641f..5b257023a4 100644
--- a/test/Dockerfile.distro
+++ b/test/Dockerfile.distro
@@ -66,7 +66,7 @@ RUN install-tool docker v28.5.1
 RUN install-tool dotnet 9.0.305
 
 # renovate: datasource=github-releases packageName=containerbase/flutter-prebuild
-RUN install-tool flutter 3.35.5
+RUN install-tool flutter 3.35.6
 
 # renovate: datasource=github-releases packageName=fluxcd/flux2
 RUN install-tool flux v2.7.2
diff --git a/test/flutter/Dockerfile b/test/flutter/Dockerfile
index 4cbd80f301..208eccb25c 100644
--- a/test/flutter/Dockerfile
+++ b/test/flutter/Dockerfile
@@ -67,7 +67,7 @@ FROM build AS testb
 USER 12021
 
 # renovate: datasource=github-releases packageName=containerbase/flutter-prebuild
-RUN install-tool flutter 3.35.5
+RUN install-tool flutter 3.35.6
 
 RUN set -ex; \
     cd d; \
@@ -84,7 +84,7 @@ RUN chown -R 1001 .
 USER 1001
 
 # renovate: datasource=github-releases packageName=containerbase/flutter-prebuild
-RUN install-tool flutter 3.35.5
+RUN install-tool flutter 3.35.6
 
 RUN set -ex; \
     cd d; \
diff --git a/test/flutter/Dockerfile.arm64 b/test/flutter/Dockerfile.arm64
index a63262a97e..122cdb0f14 100644
--- a/test/flutter/Dockerfile.arm64
+++ b/test/flutter/Dockerfile.arm64
@@ -42,7 +42,7 @@ ARG CONTAINERBASE_LOG_LEVEL
 FROM base AS test-flutter
 
 # renovate: datasource=github-releases packageName=containerbase/flutter-prebuild
-RUN install-tool flutter 3.35.5
+RUN install-tool flutter 3.35.6
 
 #--------------------------------------
 # Image: final