diff --git a/docs/index.rst b/docs/index.rst
index 948b8df2..0cfb607f 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -21,6 +21,7 @@ with a permissive `MIT license <https://github.com/mpusz/units/blob/master/LICEN
     - gcc-10
     - clang-12
     - Visual Studio 16.9
+    - Apple clang 13
 
 .. toctree::
     :maxdepth: 2
diff --git a/docs/usage.rst b/docs/usage.rst
index 9f530020..bc289de5 100644
--- a/docs/usage.rst
+++ b/docs/usage.rst
@@ -9,6 +9,7 @@ Installation And Usage
   - gcc-10
   - clang-12
   - Visual Studio 16.9
+  - Apple clang 13
 
 Repository Structure and Dependencies
 -------------------------------------