diff --git a/for_developers/Testcases.txt b/for_developers/Testcases.txt
index fcaa4dac47fbc7d5590bdd8eac814de0e43a1db7..de15996e1b268432913680d00a74ea1dce76d2b3 100644
--- a/for_developers/Testcases.txt
+++ b/for_developers/Testcases.txt
@@ -15,6 +15,7 @@
 
 Testdatensätze:
 - ERA5
+  - streams OPER or ELDA
   - full resolution vs minimal resolution, testgrid
   - 1h / 3h / 6h
   - public vs member state