diff --git a/.ci_support/environment-docs.yml b/.ci_support/environment-docs.yml
index 0e4d31a9..b0148d6c 100644
--- a/.ci_support/environment-docs.yml
+++ b/.ci_support/environment-docs.yml
@@ -13,7 +13,7 @@ dependencies:
 - spglib =2.7.0
 - phonopy =2.47.1
 - structuretoolkit =0.0.39
-- seekpath =2.2.0
+- seekpath =2.2.1
 - lammps =2024.08.29
 - pandas =2.3.3
 - pylammpsmpi =0.3.9
diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index e6b9585a..8146ace3 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -10,7 +10,7 @@ dependencies:
 - phonopy =2.47.1
 - requests =2.32.5
 - scipy =1.16.3
-- seekpath =2.2.0
+- seekpath =2.2.1
 - spglib =2.7.0
 - structuretoolkit =0.0.39
 - sphinx_parser =0.1.6
diff --git a/binder/environment.yml b/binder/environment.yml
index fa4f56be..fd93c6ec 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -7,7 +7,7 @@ dependencies:
 - spglib =2.7.0
 - phonopy =2.47.1
 - structuretoolkit =0.0.39
-- seekpath =2.2.0
+- seekpath =2.2.1
 - gpaw =25.7.0
 - lammps =2024.08.29
 - pandas =2.3.3
diff --git a/pyproject.toml b/pyproject.toml
index 507471ce..83f647bd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ Repository = "https://github.com/pyiron/atomistics"
 [project.optional-dependencies]
 phonopy = [
     "phonopy==2.47.1",
-    "seekpath==2.2.0",
+    "seekpath==2.2.1",
     "structuretoolkit==0.0.39",
 ]
 gpaw = [