diff --git a/Dockerfile b/Dockerfile
index 24d3490e..f10d37ae 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,7 @@ FROM python:3.8-slim as builder
 ARG CRYPTOGRAPHY_DONT_BUILD_RUST=1
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
+    cmake \
     g++ \
     gcc \
     libc-dev \