diff --git a/claude/Dockerfile b/claude/Dockerfile
index 736ded1..915f271 100644
--- a/claude/Dockerfile
+++ b/claude/Dockerfile
@@ -23,7 +23,7 @@ RUN KUBECTL_VERSION=$(curl -fsSL https://dl.k8s.io/release/stable.txt) \
 COPY settings.json /etc/claude-code/managed-settings.json
 
 # Install Claude Code stable release
-RUN curl -fsSL https://claude.ai/install.sh | ash
+RUN curl -fsSL https://claude.ai/install.sh | bash -s stable
 
 
 # Install MCP servers globally — entry points land in /usr/local/lib/node_modules/