diff --git a/Dockerfile b/Dockerfile
index 0c558ae..b870913 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -42,7 +42,7 @@ FROM base
 
 # Install packages needed for running the tests
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y curl git && \
+    apt-get install --no-install-recommends -y build-essentials curl git && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Copy built artifacts: gems, application