diff --git a/go.mod b/go.mod
index 2b12352b..936bf9eb 100644
--- a/go.mod
+++ b/go.mod
@@ -22,7 +22,7 @@ require (
 	github.com/lann/ps v0.0.0-20150810152359-62de8c46ede0 // indirect
 	github.com/lib/pq v1.0.0
 	github.com/mattn/go-sqlite3 v1.9.0 // indirect
-	github.com/micromdm/go4 v0.0.0-20190530145745-54e7af012bbc
+	github.com/micromdm/go4 v0.0.0-20191221011012-654e10aaab18
 	github.com/micromdm/scep v1.0.1-0.20181014170139-9be65e185499
 	github.com/pkg/errors v0.8.0
 	github.com/pmezard/go-difflib v1.0.0 // indirect
diff --git a/go.sum b/go.sum
index 44d44d9f..7500cea1 100644
--- a/go.sum
+++ b/go.sum
@@ -52,8 +52,8 @@ github.com/lib/pq v1.0.0 h1:X5PMW56eZitiTeO7tKzZxFCSpbFZJtkMMooicw2us9A=
 github.com/lib/pq v1.0.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/mattn/go-sqlite3 v1.9.0 h1:pDRiWfl+++eC2FEFRy6jXmQlvp4Yh3z1MJKg4UeYM/4=
 github.com/mattn/go-sqlite3 v1.9.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
-github.com/micromdm/go4 v0.0.0-20190530145745-54e7af012bbc h1:lpsBe6vFai/EZTbqK48gnuTjqzjHBcovCughxrNQO4k=
-github.com/micromdm/go4 v0.0.0-20190530145745-54e7af012bbc/go.mod h1:8EzTEgA3q2ZdZotWXs1bWnFCXuaFHU0+jDNZbHlwduM=
+github.com/micromdm/go4 v0.0.0-20191221011012-654e10aaab18 h1:0XJmYdtM8IWZPsFWwaOYOQuPLbaj1kaSYixLN8JB62g=
+github.com/micromdm/go4 v0.0.0-20191221011012-654e10aaab18/go.mod h1:8EzTEgA3q2ZdZotWXs1bWnFCXuaFHU0+jDNZbHlwduM=
 github.com/micromdm/scep v1.0.1-0.20181014170139-9be65e185499 h1:tAPbBGVDrfo7Tv4rvmzVQPfbQTrR/XSLbl4JuGfJbPI=
 github.com/micromdm/scep v1.0.1-0.20181014170139-9be65e185499/go.mod h1:a4hGfYA9e51888COzEduLGsstH9NPxJPndn/Ke5/Tw8=
 github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=