diff --git a/lib/spack/docs/requirements.txt b/lib/spack/docs/requirements.txt
index d2c2d18314b98f..0058e92ca11bbb 100644
--- a/lib/spack/docs/requirements.txt
+++ b/lib/spack/docs/requirements.txt
@@ -10,4 +10,4 @@ pytest==7.4.3
 isort==5.12.0
 black==23.11.0
 flake8==6.1.0
-mypy==1.7.1
+mypy==1.8.0