diff --git a/Dockerfile b/Dockerfile
index 7580ac1..71b5e48 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -32,8 +32,7 @@ RUN chown aosp:aosp /home/aosp/.gitconfig
 
 # The persistent data will be in these two directories, everything else is
 # considered to be ephemeral
-VOLUME /tmp/ccache
-VOLUME /aosp
+VOLUME ["/tmp/ccache", "/aosp"]
 
 # Improve rebuild performance by enabling compiler cache
 ENV USE_CCACHE 1