diff --git a/Dockerfile b/Dockerfile
index b292c5c..b33f509 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,8 +14,7 @@ RUN mkdir -p /app/data
 # proxy sits between LiteLLM and the enclave. Statically-linked Go binary,
 # pinned to a specific release for reproducible builds. Downloaded with Python
 # (guaranteed present in the Python base image) rather than curl/wget.
-ARG TINFOIL_PROXY_VERSION=v0.2.3
-RUN python3 -c "import urllib.request; urllib.request.urlretrieve('https://github.com/tinfoilsh/tinfoil-proxy/releases/download/${TINFOIL_PROXY_VERSION}/tinfoil-proxy-linux-amd64', '/app/code/tinfoil-proxy')" \
+RUN python3 -c "import urllib.request; urllib.request.urlretrieve('https://github.com/tinfoilsh/tinfoil-proxy/releases/download/v0.2.3/tinfoil-proxy-linux-amd64', '/app/code/tinfoil-proxy')" \
  && chmod +x /app/code/tinfoil-proxy
 
 # Create a startup script that configures LiteLLM with Cloudron addons