diff --git a/doc/requirements-doc.txt b/doc/requirements-doc.txt
index 592166df9..8bcd4167c 100644
--- a/doc/requirements-doc.txt
+++ b/doc/requirements-doc.txt
@@ -36,7 +36,7 @@ transformers
 git+https://github.com/ray-project/tune-sklearn@master#tune-sklearn
 git+https://github.com/ray-project/xgboost_ray@master#egg=xgboost_ray
 git+https://github.com/ray-project/lightgbm_ray@main#lightgbm_ray
-git+https://github.com/ray-project/ray_lightning@main#ray_lightning
+git+https://github.com/ray-project/ray_lightning@6aed848f757a03c03166c1a9bddfeea5153e7b90#ray_lightning
 
 # Syntax highlighting
 Pygments==2.11.2
diff --git a/doc/source/custom_directives.py b/doc/source/custom_directives.py
index 9623ef92b..d8a63b7ba 100644
--- a/doc/source/custom_directives.py
+++ b/doc/source/custom_directives.py
@@ -182,7 +182,7 @@ EXTERNAL_MARKDOWN_FILES = [
     ),
     (
         "ray-project/ray_lightning",
-        "main",
+        "6aed848f757a03c03166c1a9bddfeea5153e7b90",
         "README.md",
         "ray-more-libs/ray-lightning.md",
     ),