diff --git a/doc/changelog.d/660.documentation.md b/doc/changelog.d/660.documentation.md
new file mode 100644
index 000000000..83ce505c4
--- /dev/null
+++ b/doc/changelog.d/660.documentation.md
@@ -0,0 +1 @@
+Build: Bump ansys-sphinx-theme from 1.6.1 to 1.6.3
diff --git a/pyproject.toml b/pyproject.toml
index 715ae298d..4a4150ffe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ tests = [
     "pytest-cov==6.2.1",
 ]
 doc = [
-    "ansys-sphinx-theme==1.6.1",
+    "ansys-sphinx-theme==1.6.3",
     "jupyter_sphinx==0.5.3",
     "matplotlib==3.10.6",
     "numpydoc==1.9.0",