diff --git a/tools/profiling/microbenchmarks/bm_json.py b/tools/profiling/microbenchmarks/bm_json.py
index 917269823d077269a568783b3fc878f000169500..f4d628e11f04bb5052efac8573211d89ff319c7e 100644
--- a/tools/profiling/microbenchmarks/bm_json.py
+++ b/tools/profiling/microbenchmarks/bm_json.py
@@ -54,6 +54,10 @@ _BM_SPECS = {
     'tpl': [],
     'dyn': ['request_size', 'bandwidth_kilobits'],
   },
+  'BM_PumpUnbalancedUnary_Trickle': {
+    'tpl': [],
+    'dyn': ['request_size', 'bandwidth_kilobits'],
+  },
   'BM_ErrorStringOnNewError': {
     'tpl': ['fixture'],
     'dyn': [],