diff --git a/src/pip/_vendor/vendor.txt b/src/pip/_vendor/vendor.txt
index d14f1661cb4..3abc6cb1190 100644
--- a/src/pip/_vendor/vendor.txt
+++ b/src/pip/_vendor/vendor.txt
@@ -8,7 +8,7 @@ pep517==0.13.0
 platformdirs==2.5.2
 pyparsing==3.0.9
 requests==2.28.1
-    certifi==2022.9.24
+    certifi==2022.09.24
     chardet==5.0.0
     idna==3.4
     urllib3==1.26.10