diff --git a/pyproject.toml b/pyproject.toml
index a92707f..41ec6bf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,7 +49,7 @@ dev = [
     "pytest-mock==3.15.1",
     "mypy==2.3.1",
     "black==26.5.1",
-    "isort==8.0.1",
+    "isort==9.0.1",
     "ruff==0.16.5",
     "types-requests",
     "bump2version==1.0.1",
diff --git a/uv.lock b/uv.lock
index e702bf3..7b1dbda 100644
--- a/uv.lock
+++ b/uv.lock
@@ -417,11 +417,23 @@ wheels = [
 
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-version = "8.0.1"
+version = "9.0.1"
 source = { registry = "https://pypi.org/simple" }
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+dependencies = [
+    { name = "mypy-extensions" },
+]
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 ]
 
 [[package]]
@@ -1050,7 +1062,7 @@ dev = [
     { name = "black", specifier = "==26.5.1" },
     { name = "build", specifier = "==1.5.1" },
     { name = "bump2version", specifier = "==1.0.1" },
-    { name = "isort", specifier = "==8.0.1" },
+    { name = "isort", specifier = "==9.0.1" },
     { name = "mypy", specifier = "==2.3.1" },
     { name = "pre-commit", specifier = "==4.6.2" },
     { name = "pytest", specifier = "==9.1.1" },