diff --git a/requirements.txt b/requirements.txt
index 70f91ff..b6fe669 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-six >= 1.8.0,
-PyOpenGL,
-SpiNNUtilities >= 1!4.0.0, < 1!5.0.0,
-SpiNNFrontEndCommon >= 1!4.0.0, < 1!5.0.0,
+six >= 1.8.0
+PyOpenGL
+SpiNNUtilities >= 1!4.0.0, < 1!5.0.0
+SpiNNFrontEndCommon >= 1!4.0.0, < 1!5.0.0