diff --git a/wasm/install_deps.sh b/wasm/install_deps.sh
index 76c948a..011322b 100755
--- a/wasm/install_deps.sh
+++ b/wasm/install_deps.sh
@@ -2,5 +2,5 @@
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 git clone https://github.com/emscripten-core/emsdk.git ${DIR}/emsdk
-${DIR}/emsdk/emsdk install latest
-${DIR}/emsdk/emsdk activate latest
+${DIR}/emsdk/emsdk install 3.1.9
+${DIR}/emsdk/emsdk activate 3.1.9