diff --git a/web-wasm/Dockerfile.in b/web-wasm/Dockerfile.in
index 7e0b8c8..649b61c 100644
--- a/web-wasm/Dockerfile.in
+++ b/web-wasm/Dockerfile.in
@@ -1,4 +1,4 @@
-FROM emscripten/emsdk:2.0.31
+FROM emscripten/emsdk:2.0.34
 
 LABEL maintainer="Matt McCormick matt.mccormick@kitware.com"