diff --git a/browser-asmjs/Dockerfile.in b/browser-asmjs/Dockerfile.in
index f104f3d..7edc494 100644
--- a/browser-asmjs/Dockerfile.in
+++ b/browser-asmjs/Dockerfile.in
@@ -1,4 +1,4 @@
-FROM trzeci/emscripten:sdk-tag-1.37.29-64bit
+FROM trzeci/emscripten-slim:sdk-tag-1.37.29-64bit
 MAINTAINER Matt McCormick "matt.mccormick@kitware.com"
 
 # Revert back to "/bin/sh" as default shell