diff --git a/packages/hxtorch/package.py b/packages/hxtorch/package.py
index 9c41c3890a6ef2e77eeaa674ef941024d15933e5..c1b2fff901e646c41505cc56347f328c70f17879 100644
--- a/packages/hxtorch/package.py
+++ b/packages/hxtorch/package.py
@@ -13,10 +13,10 @@ class Hxtorch(WafPackage):
     # This repo provides a waf binary used for the build below
     git      = "https://github.com/electronicvisions/pynn-brainscales.git"
 
-    version('3.0-a1', branch='waf')
+    version('4.0-a1', branch='waf')
 
     # PPU compiler dependencies
-    depends_on('oppulance@2.0:')
+    depends_on('oppulance@4.0:')
 
     # host software dependencies
     depends_on('bitsery', type=('build', 'link', 'run'))