diff --git a/pyproject.toml b/pyproject.toml
index 2bf1545..7b675f0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ classifiers = [
 ]
 dependencies = [
     "python-liquid2==0.4.0",
-    "mistletoe==1.3.0",
+    "mistletoe==1.5.1",
     "requests==2.34.2",
     "tiktoken==0.13.0",
     "PyYAML==6.0.3",
diff --git a/requirements.txt b/requirements.txt
index 5aa28bb..26470d6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 python-liquid2==0.4.0
-mistletoe==1.3.0
+mistletoe==1.5.1
 python-frontmatter==1.3.0
 requests==2.34.2
 rich==15.0.0