--- a/requirements.txt
+++ b/requirements.txt
@@ -1,11 +1,11 @@
-six==1.*
+#six==1.*
 numpy==1.*
 matplotlib>=1.5.1,<3.0.0
 nibabel==2.*
 Jinja2==2.*
 Pillow>=3.2.0,<5.0
 PyOpenGL>=3.1.0,<4.0
-PyOpenGL-accelerate>=3.1.0,<4.0
+#PyOpenGL-accelerate>=3.1.0,<4.0
 PyParsing==2.*
 scipy==0.*
 indexed_gzip==0.*
