diff --git a/octave.yaml b/octave.yaml
index d69979c..24fb7f3 100644
--- a/octave.yaml
+++ b/octave.yaml
@@ -40,22 +40,8 @@ data:
     rpms:
       octave:
         rationale: The core package
+        ref: 4.4
         buildorder: 10
-#      COPASI:
-#        rationale: Extra package
-#        buildorder: 20
-#      GeographicLib:
-#        rationale: Extra package
-#        buildorder: 20
-#      libsbml:
-#        rationale: Extra package
-#        buildorder: 20
-#      mathgl:
-#        rationale: Extra package
-#        buildorder: 20
-#      NLopt:
-#        rationale: Extra package
-#        buildorder: 20
       octave-control:
         rationale: Extra package
         buildorder: 20
@@ -138,9 +124,3 @@ data:
       octave-optim:
         rationale: Extra package
         buildorder: 40
-#      libnuml:
-#        rationale: Extra package
-#        buildorder: 30
-#      libsedml:
-#        rationale: Extra package
-#        buildorder: 20