diff --git a/Dockerfile b/Dockerfile
index db692b79..271ed6a8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     gcc \
     make \
     openssl \
-    libssl-dev
+    libssl-dev \
+    clang
 
 WORKDIR /scratch
 COPY script/wasm-deps.sh .