diff --git a/build-constraints.yaml b/build-constraints.yaml
index 47a9cc8f..1cf190b7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3736,7 +3736,7 @@ packages:
 
     "Peter Trško <peter.trsko@gmail.com> @trskop":
         - between
-        - connection-pool
+        - connection-pool < 0 # https://github.com/trskop/connection-pool/issues/2
         - verbosity
 
     "Devon Hollowood <devonhollowood@gmail.com> @devonhollowood":