diff --git a/requirements.txt b/requirements.txt
index 51817bee059e97327c06d573d4482ddec7e85a72..986d25b46c60cea1686a08424fb9ab58fb87114f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,5 +2,5 @@ six==1.*
 deprecation==1.*
 numpy==1.*
 nibabel==2.*
-indexed_gzip==0.3.*
+indexed_gzip==0.*
 wxPython>=3.0.2.0,<4.1