diff --git a/doc/changelog.d/922.maintenance.md b/doc/changelog.d/922.maintenance.md
new file mode 100644
index 000000000..ac141674c
--- /dev/null
+++ b/doc/changelog.d/922.maintenance.md
@@ -0,0 +1 @@
+Bump grpcio from 1.66.1 to 1.66.2 in the core group
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index 8988d4e50..2dd404774 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -56,7 +56,7 @@ tests = [
 doc = [
     "sphinx==8.0.2",
     "ansys-sphinx-theme[autoapi]==1.0.11",
-    "grpcio==1.66.1",
+    "grpcio==1.66.2",
     "imageio-ffmpeg==0.5.1",
     "imageio==2.35.1",
     "jupyter_sphinx==0.5.3",