diff --git a/setup.py b/setup.py
index 3b68083a6..bcfdc5459 100644
--- a/setup.py
+++ b/setup.py
@@ -154,7 +154,9 @@ def localversion_func(version: ScmVersion) -> str:
             "lm_eval==0.4.5",
             # test dependencies
             "beautifulsoup4~=4.12.3",
-            "cmarkgfm>=2024.1.14",
+            # Pin cmarkgfm until issue resolved
+            # https://github.com/theacodes/cmarkgfm/issues/83
+            "cmarkgfm>=2024.1.14,<2025.10.20",
             "trl>=0.10.1",
             "pandas<2.3.0",
             "torchvision",