diff --git a/pyproject.toml b/pyproject.toml
index 3fefd0ba..bd520270 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ dependencies = [
     "docutils==0.23",
     "numpy==2.4.6",
     "PyQt6",
-    "platformdirs==4.11.1",
+    "platformdirs==4.11.3",
     "pyrr==0.10.3",
     "pyinstaller==6.21.0"
 ]
diff --git a/uv.lock b/uv.lock
index 2846bb3e..0ae298bb 100644
--- a/uv.lock
+++ b/uv.lock
@@ -202,7 +202,7 @@ dev = [
 requires-dist = [
     { name = "docutils", specifier = "==0.23" },
     { name = "numpy", specifier = "==2.4.6" },
-    { name = "platformdirs", specifier = "==4.11.1" },
+    { name = "platformdirs", specifier = "==4.11.3" },
     { name = "pyinstaller", specifier = "==6.21.0" },
     { name = "pyqt6" },
     { name = "pyrr", specifier = "==0.10.3" },
@@ -499,11 +499,11 @@ wheels = [
 
 [[package]]
 name = "platformdirs"
-version = "4.11.1"
+version = "4.11.3"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/36/0a/062135c9a98dac804265073cc3afdbec5ae1aa37980bb354f461bafe81b4/platformdirs-4.11.1.tar.gz", hash = "sha256:bb1af68078f25e2f3e111e2d43b8d536df41b73c8a684b40bb018223b66fae27", size = 32396, upload-time = "2026-08-07T23:06:48.516Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/b8/d7/e7bfbc86e9f99ff7807e24de7703f032e9c9ba80bb355cf26e0e9bc5a75e/platformdirs-4.11.3.tar.gz", hash = "sha256:66a73d38a849810252df809a3d8bcbda8e26f6c189920e7535ad608a48dbb5ab", size = 33050, upload-time = "2026-08-13T22:43:27.52Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/4c/85/9b31b44296cfa3bb56cddb35e6a0f6578bab0b490c0806c0245e32c6110c/platformdirs-4.11.1-py3-none-any.whl", hash = "sha256:2efd27d363e8dd2e661639ffb398865a5e0a46442a11d266bf375a0e0c10e386", size = 23261, upload-time = "2026-08-07T23:06:47.219Z" },
+    { url = "https://files.pythonhosted.org/packages/19/a9/c34aebedd3a4c9afe5101b1b8713710b3fec18087c8a36c35d2f909861bd/platformdirs-4.11.3-py3-none-any.whl", hash = "sha256:5ed065d443751de711da036041a7a214122efc4a4de393b3f4137ba5576540e7", size = 23491, upload-time = "2026-08-13T22:43:26.121Z" },
 ]
 
 [[package]]