diff --git a/autograder/Dockerfile b/autograder/Dockerfile
index b2d961acf7bbaca062a032cacce4d0621ff1f4b2..e2823763b14b274b392d29f3035fbede0df23049 100644
--- a/autograder/Dockerfile
+++ b/autograder/Dockerfile
@@ -12,6 +12,7 @@ RUN apt-get update && \
   tzdata \
   texinfo \
   libncurses-dev \
+  clang-format \
   elfutils \
   swig \
   python3-pip \