diff --git a/mypy.bash b/mypy.bash
index c8d73948..918ce5e9 100755
--- a/mypy.bash
+++ b/mypy.bash
@@ -22,4 +22,4 @@
 utils="../SpiNNUtils/spinn_utilities"
 machine="../SpiNNMachine/spinn_machine"
 
-mypy $utils $machine spinnman
+mypy --python-version 3.8 $utils $machine spinnman