diff --git a/linux/Dockerfile b/linux/Dockerfile
index 877641af..093f46b2 100644
--- a/linux/Dockerfile
+++ b/linux/Dockerfile
@@ -16,7 +16,7 @@ ENV DOTNET_CLI_UI_LANGUAGE=en-us
 RUN install-tool docker v28.5.2
 
 # renovate: datasource=github-releases packageName=PowerShell/PowerShell
-RUN install-tool powershell v7.6.5
+RUN install-tool powershell v7.6.6
 
 # renovate: datasource=dotnet packageName=dotnet-sdk
 RUN install-tool dotnet 8.0.425
diff --git a/windows/Dockerfile b/windows/Dockerfile
index be4f53bb..dafc8516 100644
--- a/windows/Dockerfile
+++ b/windows/Dockerfile
@@ -16,7 +16,7 @@ RUN prepare-user 'jenkins-slave$'
 RUN git config --system safe.directory "*"
 
 # renovate: datasource=github-releases packageName=PowerShell/PowerShell
-RUN install-tool powershell v7.6.5
+RUN install-tool powershell v7.6.6
 
 # renovate: datasource=node
 RUN install-tool node 24.21.0