diff --git a/doc/changelog.d/3547.dependencies.md b/doc/changelog.d/3547.dependencies.md
new file mode 100644
index 0000000000..13e587a7a5
--- /dev/null
+++ b/doc/changelog.d/3547.dependencies.md
@@ -0,0 +1 @@
+build: bump ansys-sphinx-theme from 1.2.0 to 1.2.1 in the core group
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index 3540654ff7..7063ddf067 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -76,7 +76,7 @@ doc = [
     "ansys-dpf-core==0.10.1",
     "ansys-mapdl-reader==0.54.1",
     "ansys-tools-visualization-interface==0.5.0",
-    "ansys-sphinx-theme==1.2.0",
+    "ansys-sphinx-theme==1.2.1",
     "grpcio==1.67.1",
     "imageio-ffmpeg==0.5.1",
     "imageio==2.36.0",