diff --git a/pyproject.toml b/pyproject.toml
index 1aeb4c21be..946f1ad91d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -88,7 +88,7 @@ doc = [
     "pandas==2.2.3",
     "plotly==5.24.1",
     "pyiges[full]==0.3.1",
-    "pypandoc==1.14",
+    "pypandoc==1.15",
     "pytest-sphinx==0.6.3",
     "pythreejs==2.4.2",
     "sphinx-autobuild==2024.10.3",