diff --git a/BUILD b/BUILD
index 7340a49..73c4465 100644
--- a/BUILD
+++ b/BUILD
@@ -3218,7 +3218,7 @@
         "tools/gen_merged_sql_metrics.py",
     ],
     main = "tools/gen_merged_sql_metrics.py",
-    python_version = "PY2",
+    python_version = "PY3",
 )
 
 perfetto_java_proto_library(
diff --git a/BUILD.extras b/BUILD.extras
index 6365f5c..6a0c30e 100644
--- a/BUILD.extras
+++ b/BUILD.extras
@@ -19,7 +19,7 @@
         "tools/gen_merged_sql_metrics.py",
     ],
     main = "tools/gen_merged_sql_metrics.py",
-    python_version = "PY2",
+    python_version = "PY3",
 )
 
 perfetto_java_proto_library(
diff --git a/tools/gen_merged_sql_metrics.py b/tools/gen_merged_sql_metrics.py
index 07c57e1..ca2c525 100755
--- a/tools/gen_merged_sql_metrics.py
+++ b/tools/gen_merged_sql_metrics.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Copyright (C) 2019 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");