diff --git a/pkgs/development/python-modules/mxnet/default.nix b/pkgs/development/python-modules/mxnet/default.nix
index 317f79ebe081..2c8ea30345f3 100644
--- a/pkgs/development/python-modules/mxnet/default.nix
+++ b/pkgs/development/python-modules/mxnet/default.nix
@@ -20,9 +20,9 @@ buildPythonPackage rec {
 
   postPatch = ''
     substituteInPlace python/setup.py \
-    --replace "graphviz<0.9.0" "graphviz<0.10.0" \
-    --replace "numpy<=1.15.0" "numpy<1.16.0" \
-    --replace "requests<2.19.0" "requests<2.20.0"
+      --replace "graphviz<0.9.0," "graphviz" \
+      --replace "numpy<=1.15.0," "numpy" \
+      --replace "requests<2.19.0," "requests"
   '';
 
   preConfigure = ''