diff --git a/build-constraints.yaml b/build-constraints.yaml
index b201fcd0..2412a1be 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3599,7 +3599,7 @@ packages:
 
     "Sergey Vinokurov <serg.foo@gmail.com> @sergv":
         - emacs-module
-        - tasty-ant-xml
+        - tasty-ant-xml < 0 # tasty 1.2
 
     "Eugene Smolanka <esmolanka@gmail.com> @esmolanka":
         - sexp-grammar < 0
@@ -3864,7 +3864,7 @@ packages:
 
     "Stackage upper bounds":
         # https://github.com/commercialhaskell/stackage/issues/4196
-        - tasty < 1.2
+        # - tasty < 1.2
 
         # https://github.com/commercialhaskell/stackage/issues/4214
         - haskell-src-exts < 1.21