diff --git a/pyproject.toml b/pyproject.toml
index 055c5885..757b7ca4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -86,7 +86,7 @@ dev = [
     "pytest-cov==7.1.0",
     "pytest-xprocess==1.0.2",
     "coverage==7.16.2",
-    "pypdf==6.21.2",
+    "pypdf==6.21.4",
 ]
 
 [project.urls]
diff --git a/uv.lock b/uv.lock
index 403f716e..e2ff99b1 100644
--- a/uv.lock
+++ b/uv.lock
@@ -119,7 +119,7 @@ requires-dist = [
     { name = "pydantic", specifier = "==2.14.1" },
     { name = "pydantic-extra-types", specifier = "==2.11.2" },
     { name = "pydantic-settings", specifier = "==2.16.1" },
-    { name = "pypdf", marker = "extra == 'dev'", specifier = "==6.21.2" },
+    { name = "pypdf", marker = "extra == 'dev'", specifier = "==6.21.4" },
     { name = "pytest", marker = "extra == 'dev'", specifier = "==9.1.1" },
     { name = "pytest-asyncio", marker = "extra == 'dev'", specifier = "==1.4.0" },
     { name = "pytest-cov", marker = "extra == 'dev'", specifier = "==7.1.0" },
@@ -3070,11 +3070,11 @@ wheels = [
 
 [[package]]
 name = "pypdf"
-version = "6.21.2"
+version = "6.21.4"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/06/28/081f1cbcca7042441dafc8de00f48ba60853f89e5bff92c5f26477346d81/pypdf-6.21.2.tar.gz", hash = "sha256:0a3e1c5c886a1be03646c16a04827cc166c2a0575c971b26a4bf89686551c2d4", size = 7144571, upload-time = "2026-10-21T16:44:55.272Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/1e/e1/ec8f4d155c997c45917153a5521e60d6ee6389d68abdcbc8e44e564caffc/pypdf-6.21.4.tar.gz", hash = "sha256:c8817e3f888d47a087872ded69812c1ef30cacb871d6e053e0c00bbaf0bc2163", size = 7109255, upload-time = "2026-10-28T17:00:54.81Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/1b/4d/c9d2d67f204eff463237a1a8f5e25a6923b7b1043982b91fcaf104c8ef60/pypdf-6.21.2-py3-none-any.whl", hash = "sha256:1d44d1a3a200f25062adff0085b02040e4646431ac2ccac22e42679e91466084", size = 407766, upload-time = "2026-10-21T16:44:53.626Z" },
+    { url = "https://files.pythonhosted.org/packages/3f/4b/77e8ad4ac42c9d93600f40541a50e9feb3a61d2bbee2d76f659346072051/pypdf-6.21.4-py3-none-any.whl", hash = "sha256:33e4fb41ca352810eb4e9838aa0d82d6888a5f8bf682f43e99cce5faa666255c", size = 410430, upload-time = "2026-10-28T17:00:53.146Z" },
 ]
 
 [[package]]