diff --git a/emsdk/Makefile b/emsdk/Makefile
index 36aee4922..ebb458cc6 100644
--- a/emsdk/Makefile
+++ b/emsdk/Makefile
@@ -7,7 +7,7 @@ all: emsdk/.complete
 
 emsdk/.complete: ../Makefile.envs $(wildcard patches/*.patch)
 	if [ -d emsdk ]; then rm -rf emsdk; fi
-	git clone https://github.com/emscripten-core/emsdk.git
+	git clone --depth 1 https://github.com/emscripten-core/emsdk.git
 	cd emsdk && ./emsdk install --build=Release $(EMSCRIPTEN_VERSION)-fastcomp
 	git clone --branch $(BINARYEN_VERSION) --depth 1 https://github.com/WebAssembly/binaryen.git emsdk/binaryen
 	cat patches/*.patch | patch -p1