diff --git a/Development-Testing-Release.md b/Development-Testing-Release.md
index bda92cd..e020418 100644
--- a/Development-Testing-Release.md
+++ b/Development-Testing-Release.md
@@ -2,6 +2,14 @@
  
 (TODO)
 
+# Github Workflows
+
+## Issue with "Coveralls.io"
+
+`Error running coveralls: Could not submit coverage: 405 Client Error: Method Not Allowed for url: https://coveralls.io/api/v1/jobs`
+
+Check for announced downtime: https://coveralls.io/ -> restart workflow after external service is up again.
+
 # Testing
 
 ## Preparation