diff --git a/CI/Dockerfile b/CI/Dockerfile
index a202d7a661eb29fe00d81a2709a529aed2e9165a..10319e3a49d001039928b5ebf7ab44d3e2a33b6d 100644
--- a/CI/Dockerfile
+++ b/CI/Dockerfile
@@ -15,6 +15,7 @@ RUN apt-get update -y \
         curl \
         make \
         cmake \
+        ninja-build \
         g++ \
         gcc \
         clang \