diff --git a/.ci_support/environment-docs.yml b/.ci_support/environment-docs.yml
index 1aedaac50..9ce4eab1c 100644
--- a/.ci_support/environment-docs.yml
+++ b/.ci_support/environment-docs.yml
@@ -15,7 +15,7 @@ dependencies:
 - mp-api =0.43.0
 - numpy =1.26.4
 - pandas =2.2.3
-- phonopy =2.26.6
+- phonopy =2.31.1
 - pint =0.24.4
 - pyiron_base =0.10.9
 - pyiron_snippets =0.1.4
diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index 6e86f52d6..f7dbc4434 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -13,7 +13,7 @@ dependencies:
 - mp-api =0.43.0
 - numpy =1.26.4
 - pandas =2.2.3
-- phonopy =2.26.6
+- phonopy =2.31.1
 - pint =0.24.4
 - pyiron_base =0.10.9
 - pyiron_snippets =0.1.4
diff --git a/binder/environment.yml b/binder/environment.yml
index c9dc185bf..1a7fabb36 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -11,7 +11,7 @@ dependencies:
 - mp-api =0.43.0
 - numpy =1.26.4
 - pandas =2.2.3
-- phonopy =2.26.6
+- phonopy =2.31.1
 - pint =0.24.4
 - pyiron_base =0.10.9
 - pyiron_snippets =0.1.4
diff --git a/pyproject.toml b/pyproject.toml
index 7e324290e..530c4dd9b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ dependencies = [
     "mp-api==0.43.0",
     "numpy==1.26.4",
     "pandas==2.2.3",
-    "phonopy==2.26.6",
+    "phonopy==2.31.1",
     "pint==0.24.4",
     "pyiron_base==0.10.9",
     "pyiron_snippets==0.1.4",