diff --git a/Dockerfile b/Dockerfile
index c497f31..bcab4cd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,7 +7,7 @@ ENV POCKET_IC_SERVER_VERSION=8.0.0
 ENV POCKET_IC_PYTHON_VERSION=3.0.1
 
 RUN apt -yq update
-RUN apt -yqq install --no-install-recommends curl ca-certificates libunwind-dev git python3 python3-pip ssh
+RUN apt -yqq install --no-install-recommends curl ca-certificates clang libunwind-dev git python3 python3-pip ssh
 
 # Install Node.js using nvm
 ENV PATH="/root/.nvm/versions/node/v${NODE_VERSION}/bin:${PATH}"
diff --git a/slim/Dockerfile b/slim/Dockerfile
index f8bb6a9..e60fbdf 100644
--- a/slim/Dockerfile
+++ b/slim/Dockerfile
@@ -7,7 +7,7 @@ ENV IC_MOPS_VERSION=1.11.1
 ENV CANDID_EXTRACTOR_VERSION=0.1.6
 
 RUN apt -yq update
-RUN apt -yqq install --no-install-recommends curl ca-certificates libunwind-dev git
+RUN apt -yqq install --no-install-recommends clang curl ca-certificates libunwind-dev git
 
 # Install Node.js using nvm
 ENV PATH="/root/.nvm/versions/node/v${NODE_VERSION}/bin:${PATH}"