diff --git a/git-remote-hg b/git-remote-hg
index bec1609..35e3895 100755
--- a/git-remote-hg
+++ b/git-remote-hg
@@ -1163,7 +1163,9 @@ def push_unsafe(repo, remote, p_revs, force):
     if not outgoing.missing:
         return None
 
-    if check_version(3, 2):
+    if check_version(4, 0):
+        cg = changegroup.getlocalchangegroup(repo, 'push', outgoing)
+    elif check_version(3, 2):
         cg = changegroup.getchangegroup(repo, 'push', heads=list(p_revs), common=common)
     elif check_version(3, 0):
         cg = changegroup.getbundle(repo, 'push', heads=list(p_revs), common=common)