diff --git a/src/pyproject.toml b/src/pyproject.toml
index 26fd7fe..b37b6c9 100644
--- a/src/pyproject.toml
+++ b/src/pyproject.toml
@@ -54,7 +54,7 @@ dependencies = [
     "packaging==25.0",
     "pillow==11.3.0",
     "propcache==0.4.1",
-    "pycparser==2.23",
+    "pycparser==3.0",
     "pydantic==2.11.7",
     "pydantic-core==2.33.2",
     "pykakasi==2.3.0",
diff --git a/src/requirements.txt b/src/requirements.txt
index 22a9a26..bd731d2 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -45,7 +45,7 @@ numpy==2.4.1
 packaging==25.0
 pillow==11.3.0
 propcache==0.4.1
-pycparser==2.23
+pycparser==3.0
 pydantic==2.11.7
 pydantic_core==2.33.2
 pykakasi==2.3.0
diff --git a/src/uv.lock b/src/uv.lock
index 79fa806..8254f7f 100644
--- a/src/uv.lock
+++ b/src/uv.lock
@@ -1640,11 +1640,11 @@ wheels = [
 
 [[package]]
 name = "pycparser"
-version = "2.23"
+version = "3.0"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/fe/cf/d2d3b9f5699fb1e4615c8e32ff220203e43b248e1dfcc6736ad9057731ca/pycparser-2.23.tar.gz", hash = "sha256:78816d4f24add8f10a06d6f05b4d424ad9e96cfebf68a4ddc99c65c0720d00c2", size = 173734, upload-time = "2025-09-09T13:23:47.91Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/1b/7d/92392ff7815c21062bea51aa7b87d45576f649f16458d78b7cf94b9ab2e6/pycparser-3.0.tar.gz", hash = "sha256:600f49d217304a5902ac3c37e1281c9fe94e4d0489de643a9504c5cdfdfc6b29", size = 103492, upload-time = "2026-01-21T14:26:51.89Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/a0/e3/59cd50310fc9b59512193629e1984c1f95e5c8ae6e5d8c69532ccc65a7fe/pycparser-2.23-py3-none-any.whl", hash = "sha256:e5c6e8d3fbad53479cab09ac03729e0a9faf2bee3db8208a550daf5af81a5934", size = 118140, upload-time = "2025-09-09T13:23:46.651Z" },
+    { url = "https://files.pythonhosted.org/packages/0c/c3/44f3fbbfa403ea2a7c779186dc20772604442dde72947e7d01069cbe98e3/pycparser-3.0-py3-none-any.whl", hash = "sha256:b727414169a36b7d524c1c3e31839a521725078d7b2ff038656844266160a992", size = 48172, upload-time = "2026-01-21T14:26:50.693Z" },
 ]
 
 [[package]]
@@ -2066,7 +2066,7 @@ requires-dist = [
     { name = "packaging", specifier = "==25.0" },
     { name = "pillow", specifier = "==11.3.0" },
     { name = "propcache", specifier = "==0.4.1" },
-    { name = "pycparser", specifier = "==2.23" },
+    { name = "pycparser", specifier = "==3.0" },
     { name = "pydantic", specifier = "==2.11.7" },
     { name = "pydantic-core", specifier = "==2.33.2" },
     { name = "pykakasi", specifier = "==2.3.0" },