diff --git a/build-constraints.yaml b/build-constraints.yaml
index 83b92edd..b3f57dce 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -6030,6 +6030,8 @@ expected-benchmark-failures:
 
     # https://github.com/mmark-md/mmark-ext/issues/20
     - mmark-ext
+    # https://github.com/mmark-md/mmark/issues/76
+    - mmark
 # end of expected-benchmark-failures