diff --git a/build-constraints.yaml b/build-constraints.yaml
index 152cfb1f..3ad975f6 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3424,6 +3424,9 @@ packages:
 
         # https://github.com/sol/hpack/issues/202
         - Glob < 0.9.0
+
+        # https://github.com/fpco/stackage/issues/2920
+        - fingertree < 0.1.2
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of