diff --git a/.github/actions/pr_notifier/requirements.txt b/.github/actions/pr_notifier/requirements.txt
index cc6a4466bd8b1..c386fd0cd733b 100644
--- a/.github/actions/pr_notifier/requirements.txt
+++ b/.github/actions/pr_notifier/requirements.txt
@@ -210,7 +210,9 @@ pynacl==1.4.0 \
 python-dateutil==2.8.2 \
     --hash=sha256:0123cacc1627ae19ddf3c27a5de5bd67ee4586fbdd6440d9748f8abb483d3e86 \
     --hash=sha256:961d03dc3453ebbc59dbdea9e4e11c5651520a876d0f4db161e8674aae935da9
-    # via pygithub
+    # via
+    #   icalendar
+    #   pygithub
 pytz==2023.3.post1 \
     --hash=sha256:7b4fddbeb94a1eba4b557da24f19fdf9db575192544270a9101d8509f9f43d7b \
     --hash=sha256:ce42d816b81b68506614c11e8937d3aa9e41007ceb50bfdcb0749b921bf646c7
@@ -235,9 +237,9 @@ typing-extensions==4.8.0 \
     --hash=sha256:8f92fc8806f9a6b641eaa5318da32b44d401efaac0f6678c9bc448ba3605faa0 \
     --hash=sha256:df8e4339e9cb77357558cbdbceca33c303714cf861d1eef15e1070055ae8b7ef
     # via pygithub
-urllib3==1.26.6 \
-    --hash=sha256:39fb8672126159acb139a7718dd10806104dec1e2f0f6c88aab05d17df10c8d4 \
-    --hash=sha256:f57b4c16c62fa2760b7e3d97c35b255512fb6b59a259730f36ba32ce9f8e342f
+urllib3==1.26.17 \
+    --hash=sha256:24d6a242c28d29af46c3fae832c36db3bbebcc533dd1bb549172cd739c82df21 \
+    --hash=sha256:94a757d178c9be92ef5539b8840d48dc9cf1b2709c9d6b588232a055c524458b
     # via
     #   pygithub
     #   requests