diff --git a/build-constraints.yaml b/build-constraints.yaml
index 720ea9aab..11396062b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2239,6 +2239,9 @@ expected-haddock-failures:
 
     # https://github.com/fpco/stackage/issues/1015
     - dejafu
+
+    # https://github.com/fpco/stackage/issues/1018
+    - stm-conduit
 # end of expected-haddock-failures