diff --git a/build-constraints.yaml b/build-constraints.yaml
index 2f013c65..41b278c2 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3191,9 +3191,6 @@ packages:
         - criterion < 1.2
         - statistics < 0.14 # requires bigger criterion, criterion stopped on #2538
 
-        # https://github.com/camfort/camfort/issues/64
-        - fortran-src < 0.1.0.6
-
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of