diff --git a/pyproject.toml b/pyproject.toml
index 3b2b36e..750d2b1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-    "pip-licenses==5.5.1",
+    "pip-licenses==5.5.4",
     "pytest==9.0.2",
     "pytest-cov==7.1.0",
 ]
diff --git a/uv.lock b/uv.lock
index 240df4b..931e1df 100644
--- a/uv.lock
+++ b/uv.lock
@@ -310,7 +310,7 @@ requires-dist = [
     { name = "litellm", specifier = "==1.82.6" },
     { name = "mcp", specifier = "==1.26.0" },
     { name = "pillow", specifier = "==12.1.1" },
-    { name = "pip-licenses", marker = "extra == 'dev'", specifier = "==5.5.1" },
+    { name = "pip-licenses", marker = "extra == 'dev'", specifier = "==5.5.4" },
     { name = "pytest", marker = "extra == 'dev'", specifier = "==9.0.2" },
     { name = "pytest-cov", marker = "extra == 'dev'", specifier = "==7.1.0" },
     { name = "slack-bolt", specifier = "==1.27.0" },
@@ -1025,14 +1025,14 @@ wheels = [
 
 [[package]]
 name = "pip-licenses"
-version = "5.5.1"
+version = "5.5.4"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "prettytable" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/44/4c/b4be9024dae3b5b3c0a6c58cc1d4a35fffe51c3adb835350cb7dcd43b5cd/pip_licenses-5.5.1.tar.gz", hash = "sha256:7df370e6e5024a3f7449abf8e4321ef868ba9a795698ad24ab6851f3e7fc65a7", size = 49108, upload-time = "2026-01-27T21:46:41.432Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/91/f4/f66edbc25c430d2b673eda8ac82438d32d81ca50211f672acdf7a7944168/pip_licenses-5.5.4.tar.gz", hash = "sha256:83402b0b814504bf442a93ddc3b35049395590a72f3f379728c4dc36906b4b95", size = 54546, upload-time = "2026-03-28T21:51:18.255Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/a0/a3/0b369cdffef3746157712804f1ded9856c75aa060217ee206f742c74e753/pip_licenses-5.5.1-py3-none-any.whl", hash = "sha256:ed5e229a93760e529cfa7edaec6630b5a2cd3874c1bddb8019e5f18a723fdead", size = 22108, upload-time = "2026-01-27T21:46:39.766Z" },
+    { url = "https://files.pythonhosted.org/packages/2b/91/ad796e881ad8c530ab7debeafe7413a2a7c4825bafcc88fe10ad883fa3bd/pip_licenses-5.5.4-py3-none-any.whl", hash = "sha256:9326b7ac067e27dccc83775a0478c6fb7e67ca471c060d2bca10b0180da9c286", size = 23117, upload-time = "2026-03-28T21:51:16.983Z" },
 ]
 
 [[package]]