diff --git a/README.md b/README.md
index ad4be7f..5a991e6 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,6 @@ spirv-to-dxil-rs builds a copy of spirv-to-dxil statically from Mesa. Many of th
 Lex and Yacc are not required. Additionally, [CMake 3.6](https://cmake.org/) or later is required to run the build script.
 
 ```bash
-$ git submodule update --init
+$ git submodule update --init --progress --depth=1
 $ cargo build
 ```
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