diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index f7254bfee..92eca3788 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -11,7 +11,7 @@ dependencies:
 - notebook
 - numpy =2.3.4
 - phonopy =2.43.6
-- plotly =6.4.0
+- plotly =6.5.0
 - pymatgen =2025.10.7
 - pyscal3 =3.3.0
 - scikit-learn =1.7.2
diff --git a/pyproject.toml b/pyproject.toml
index 6b5648011..00a4f495f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ grainboundary = [
 pyscal = ["pyscal3==3.3.0"]
 nglview = ["nglview==3.1.4"]
 matplotlib = ["matplotlib==3.10.7"]
-plotly = ["plotly==6.4.0"]
+plotly = ["plotly==6.5.0"]
 clusters = ["scikit-learn==1.7.2"]
 symmetry = ["spglib==2.6.0"]
 surface = [