diff --git a/Dockerfile b/Dockerfile
index 6b973d5..b737f1d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,7 @@ ENTRYPOINT [ "./container-init.sh" ]
 ENV CI="true"
 
 # renovate: datasource=npm depName=pnpm
-ENV PNPM_VERSION="11.8.0"
+ENV PNPM_VERSION="11.21.0"
 
 RUN apt-get update \
 && DEBIAN_FRONTEND=noninteractive apt-get --assume-yes upgrade \