diff --git a/build-constraints.yaml b/build-constraints.yaml
index 0dc0d942..226e4efc 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -239,7 +239,7 @@ packages:
         - keter
         - zxcvbn-hs
         - esqueleto-postgis
-        - ram
+        - ram < 0 # disabled for lts-25 https://github.com/commercialhaskell/stackage/issues/8023
         - unwitch
 
     "Jakob Schöttl <jakob.schoettl@intensovet.de> @schoettl":