diff --git a/test/helpers/cons.go b/test/helpers/cons.go
index <HASH>..<HASH> 100644
--- a/test/helpers/cons.go
+++ b/test/helpers/cons.go
@@ -318,7 +318,7 @@ var ciliumCLICommands = map[string]string{
 	"cilium status --all-controllers":       "status.txt",
 	"cilium kvstore get cilium --recursive": "kvstore_get.txt",
 
-	"hubble observe --since 4h -o json": "hubble_observe.txt",
+	"hubble observe --since 4h -o jsonpb": "hubble_observe.json",
 }
 
 // ciliumKubCLICommands these commands are the same as `ciliumCLICommands` but
@@ -333,7 +333,7 @@ var ciliumKubCLICommands = map[string]string{
 	"cilium policy get":               "policy_get.txt",
 	"cilium status --all-controllers": "status.txt",
 
-	"hubble observe --since 4h -o json": "hubble_observe.txt",
+	"hubble observe --since 4h -o jsonpb": "hubble_observe.json",
 }
 
 // ciliumKubCLICommandsKVStore contains commands related to querying the kvstore.
test: Use hubble's jsonpb output in artifacts

hubble observe now supports [1] reading flows from stdin if they are in
jsonpb format. We should therefore emit jsonpb artifact files for tests,
to be able to feed those files back into hubble observe. That will allow
us to use hubble observe's filters and different output format.

1 - <URL>