diff --git a/Dockerfile b/Dockerfile
index 5adeddfd..8c7eb8fc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -59,6 +59,8 @@ RUN bash bin/update-or-path.sh
 RUN bash bin/update-conjure-paths.sh
 
 # For use during development
+
+RUN apt-get update
 RUN apt-get install -y \
     vim \
     file