diff --git a/requirements.txt b/requirements.txt
index 3543462cfb2925023ee66a64b9a2619a004bf61e..4391df5500347e75823b724452b4294ed7af9c4e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ cython>=0.24
 six>=1.10.0
 numpy>=1.11.1
 matplotlib>=1.5.1
-nibabel>=2.0.2
+nibabel>=2.1
 sphinx>=1.4.1
 sphinx-rtd-theme>=0.1.9
 indexed_gzip>=0.3.1