diff --git a/README.md b/README.md
index f0fba82..704596b 100644
--- a/README.md
+++ b/README.md
@@ -11,9 +11,9 @@ build to [jumpartifact.com/demo0](https://jumpartifact.com/demo0/).
 Clone `https://github.com/emscripten-core/emsdk.git` to `${HOME}/git/emsdk`, and
 run the following commands in the cloned directory:
 
-    git checkout 3.1.50
-    ./emsdk install 3.1.50
-    ./emsdk activate 3.1.50
+    git checkout 3.1.56
+    ./emsdk install 3.1.56
+    ./emsdk activate 3.1.56
 
 Now you can use emsdk by sourcing the `emsdk_env.sh` file and using emcc/em++.
 The Makefile in `wasm_build/` should now "just work" with `make`.
diff --git a/emsdk_version b/emsdk_version
index 0bc4611..7db1531 100644
--- a/emsdk_version
+++ b/emsdk_version
@@ -1 +1 @@
-3.1.50
+3.1.56