diff --git a/doc/requirements.txt b/doc/requirements.txt
index 944cc7ca..172a45b2 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -12,7 +12,7 @@ packaging==23.0
 Pillow==10.2.0
 Pygments==2.14.0
 pytz==2022.7.1
-PyYAML==6.0
+PyYAML==6.0.1
 reportlab==4.0.9
 requests==2.28.2
 rst2pdf==0.99
@@ -28,4 +28,3 @@ sphinxcontrib-serializinghtml==1.1.5
 sphinxcontrib.applehelp==1.0.3
 urllib3==1.26.14
 zipp==3.11.0
-