diff --git a/Dockerfile b/Dockerfile
index e99cd55e8..512044c69 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,9 @@ WORKDIR /app
 # Copy package.json first to cache node_modules
 COPY package.json pnpm-lock.yaml pnpm-workspace.yaml .
 
+# Match packageManager in package.json (pnpm is not bundled in the Node image)
+RUN corepack enable && corepack prepare pnpm@11.5.2 --activate
+
 RUN pnpm install
 
 # Copy code and build with cached modules