diff --git a/def.bzl b/def.bzl
index 35f318565..f0426efcc 100755
--- a/def.bzl
+++ b/def.bzl
@@ -94,4 +94,5 @@ py_library(
         name = "subpar",
         remote = "https://github.com/google/subpar",
         commit = "0356bef3fbbabec5f0e196ecfacdeb6db62d48c0",  # 2019-03-07
+        shallow_since = "1551997562 -0500"
     )