diff --git a/hggit/__init__.py b/hggit/__init__.py
index 97fbedc2e25043f0bf48546b02912170c1eabda2_aGdnaXQvX19pbml0X18ucHk=..70484a237a2c6c9abc83f5e92fc30ebd1f96b47c_aGdnaXQvX19pbml0X18ucHk= 100644
--- a/hggit/__init__.py
+++ b/hggit/__init__.py
@@ -67,7 +67,7 @@
 __version__ = b'0.9.0a1'
 
 testedwith = (b'4.3.3 4.4.2 4.5.3 4.6.2 '
-              b'4.7.2 4.8.2 4.9.1 5.0.2 5.1.2 5.2 5.3 5.4')
+              b'4.7.2 4.8.2 4.9.1 5.0.2 5.1.2 5.2 5.3 5.4 5.5')
 minimumhgversion = b'4.3'
 buglink = b'https://foss.heptapod.net/mercurial/hg-git/issues'