diff --git a/requirements.in b/requirements.in
index a85caacf..e5f09bfb 100644
--- a/requirements.in
+++ b/requirements.in
@@ -204,7 +204,7 @@ mypy==1.20.2
     # via mozilla-jetstream
 mypy-extensions==1.1.0
     # via mypy
-narwhals==2.20.0
+narwhals==2.22.1
     # via
     #   formulaic
     #   marginaleffects
diff --git a/requirements.txt b/requirements.txt
index 9eb3a49e..839cf7b0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1413,9 +1413,9 @@ mypy-extensions==1.1.0 \
     # via
     #   -r requirements.in
     #   mypy
-narwhals==2.20.0 \
-    --hash=sha256:16e750ea5507d4ba6e8d03455b5f93a535e0405976561baea235bca5dc9f475d \
-    --hash=sha256:c10994975fa7dc5a68c2cffcddbd5908fc8ebb2d463c5bab085309c0ee1f551e
+narwhals==2.22.1 \
+    --hash=sha256:60567d774edf77db53906f89d9fbd164e66e56d66d388e1e6990f17ac33cfb53 \
+    --hash=sha256:d62920805a0a43b7ff8b54b0c0d3142d796f8a9301836ada37e573d6a33cbcd9
     # via
     #   -r requirements.in
     #   formulaic