diff --git a/.github/config/lychee.toml b/.github/config/lychee.toml
index 720b0e8bf32..50d12ceec8d 100644
--- a/.github/config/lychee.toml
+++ b/.github/config/lychee.toml
@@ -13,4 +13,5 @@ include_fragments = "full"
 exclude = [
   "^https://github.com/open-telemetry/opentelemetry-java/(issues|pull)/\\d+$",
   "^https://www.javadoc.io/badge/(.*?)/(.*?).svg$", # returns 522
+  "^https://cloud-native.slack.com/", # slack requires auth
 ]