diff --git a/documents/Libraries/Source/OSL/README.md b/documents/Libraries/Source/OSL/README.md
index 4b71496879..53fc4ebb91 100644
--- a/documents/Libraries/Source/OSL/README.md
+++ b/documents/Libraries/Source/OSL/README.md
@@ -2,4 +2,4 @@
 
 This folder contains reference OSL implementations for the standard MaterialX nodes, documenting their intended functionality as of MaterialX v1.35.
 
-The Open Shading Language team maintains source file generators for the MaterialX nodes at https://github.com/imageworks/OpenShadingLanguage/tree/master/src/shaders/MaterialX.
+The Open Shading Language team maintains source file generators for the MaterialX nodes at https://github.com/imageworks/OpenShadingLanguage/tree/master/src/shaders/MaterialX, and these source files were built from [this version](https://github.com/imageworks/OpenShadingLanguage/tree/e9e55306ea7b4356b51c91c180e6e9ac1cad6bb1) of the repository.