diff --git a/Dockerfile b/Dockerfile
index a86b8d0..dcf29b7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 
 FROM ubuntu:18.04
 
-RUN apt update && apt install -y \
+RUN apt-get update && apt-get install -y \
     cmake \
     g++ \
     wget \