diff --git a/pyproject.toml b/pyproject.toml
index 8354c77..9ab5dde 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ classifiers = [
 # Project dependencies with exact versions for reproducibility
 dependencies = [
     "mdformat==0.7.22",
-    "mdformat-gfm==0.4.1",
+    "mdformat-gfm==1.0.0",
     "mdformat_footnote==0.1.1",
     "mdformat_frontmatter==2.0.8",
     "mdformat_tables==1.0.0",