diff --git a/lambdas/slack_post/requirements.txt b/lambdas/slack_post/requirements.txt
index 17f74bc..af6ab55 100644
--- a/lambdas/slack_post/requirements.txt
+++ b/lambdas/slack_post/requirements.txt
@@ -1 +1 @@
-slack_sdk>=3.33.0
+slack_sdk>=3.43.0