diff --git a/docs/source/conf.py b/docs/source/conf.py
index ea3b56e02d1e8..f4e8c8b949102 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -37,7 +37,6 @@ author = 'the vLLM Team'
 # ones.
 extensions = [
     "sphinx.ext.napoleon",
-    "sphinx.ext.viewcode",
     "sphinx.ext.linkcode",
     "sphinx.ext.intersphinx",
     "sphinx_copybutton",