diff --git a/lightrag/api/routers/document_routes.py b/lightrag/api/routers/document_routes.py
index 3e479a53..f86bcea8 100644
--- a/lightrag/api/routers/document_routes.py
+++ b/lightrag/api/routers/document_routes.py
@@ -1081,11 +1081,11 @@ async def pipeline_enqueue_file(
                             result = converter.convert(file_path)
                             content = result.document.export_to_markdown()
                         else:
-                            if not pm.is_installed("pypdf2"):  # type: ignore
-                                pm.install("pypdf2")
+                            if not pm.is_installed("pypdf"):  # type: ignore
+                                pm.install("pypdf")
                             if not pm.is_installed("pycryptodome"):  # type: ignore
                                 pm.install("pycryptodome")
-                            from PyPDF2 import PdfReader  # type: ignore
+                            from pypdf import PdfReader  # type: ignore
                             from io import BytesIO
 
                             pdf_file = BytesIO(file)
diff --git a/pyproject.toml b/pyproject.toml
index 29f7c58e..81e44aff 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -86,7 +86,7 @@ offline-docs = [
     # Document processing dependencies
     "openpyxl>=3.0.0,<4.0.0",
     "pycryptodome>=3.0.0,<4.0.0",
-    "pypdf2>=3.0.0",
+    "pypdf>=6.1.0",
     "python-docx>=0.8.11,<2.0.0",
     "python-pptx>=0.6.21,<2.0.0",
 ]
diff --git a/requirements-offline-docs.txt b/requirements-offline-docs.txt
index 14d782fd..12f02080 100644
--- a/requirements-offline-docs.txt
+++ b/requirements-offline-docs.txt
@@ -10,6 +10,6 @@
 # Document processing dependencies (with version constraints matching pyproject.toml)
 openpyxl>=3.0.0,<4.0.0
 pycryptodome>=3.0.0,<4.0.0
-pypdf2>=3.0.0
+pypdf>=6.1.0
 python-docx>=0.8.11,<2.0.0
 python-pptx>=0.6.21,<2.0.0
diff --git a/requirements-offline.txt b/requirements-offline.txt
index 0582eaca..50848093 100644
--- a/requirements-offline.txt
+++ b/requirements-offline.txt
@@ -24,7 +24,7 @@ openpyxl>=3.0.0,<4.0.0
 pycryptodome>=3.0.0,<4.0.0
 pymilvus>=2.6.2,<3.0.0
 pymongo>=4.0.0,<5.0.0
-pypdf2>=3.0.0
+pypdf>=6.1.0
 python-docx>=0.8.11,<2.0.0
 python-pptx>=0.6.21,<2.0.0
 qdrant-client>=1.11.0,<2.0.0
diff --git a/uv.lock b/uv.lock
index 63fa0a78..b942632f 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1981,7 +1981,7 @@ offline = [
     { name = "pycryptodome" },
     { name = "pymilvus" },
     { name = "pymongo" },
-    { name = "pypdf2" },
+    { name = "pypdf" },
     { name = "python-docx" },
     { name = "python-pptx" },
     { name = "qdrant-client" },
@@ -1992,7 +1992,7 @@ offline = [
 offline-docs = [
     { name = "openpyxl" },
     { name = "pycryptodome" },
-    { name = "pypdf2" },
+    { name = "pypdf" },
     { name = "python-docx" },
     { name = "python-pptx" },
 ]
@@ -2071,7 +2071,7 @@ requires-dist = [
     { name = "pyjwt", marker = "extra == 'api'", specifier = ">=2.8.0,<3.0.0" },
     { name = "pymilvus", marker = "extra == 'offline-storage'", specifier = ">=2.6.2,<3.0.0" },
     { name = "pymongo", marker = "extra == 'offline-storage'", specifier = ">=4.0.0,<5.0.0" },
-    { name = "pypdf2", marker = "extra == 'offline-docs'", specifier = ">=3.0.0" },
+    { name = "pypdf", marker = "extra == 'offline-docs'", specifier = ">=6.1.0" },
     { name = "pypinyin" },
     { name = "pypinyin", marker = "extra == 'api'" },
     { name = "pytest", marker = "extra == 'evaluation'", specifier = ">=8.4.2" },
@@ -3977,15 +3977,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/fa/ed/494fd0cc1190a7c335e6958eeaee6f373a281869830255c2ed4785dac135/pypdf-6.1.3-py3-none-any.whl", hash = "sha256:eb049195e46f014fc155f566fa20e09d70d4646a9891164ac25fa0cbcfcdbcb5", size = 323863, upload-time = "2025-10-22T16:13:44.174Z" },
 ]
 
-[[package]]
-name = "pypdf2"
-version = "3.0.1"
-source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/9f/bb/18dc3062d37db6c491392007dfd1a7f524bb95886eb956569ac38a23a784/PyPDF2-3.0.1.tar.gz", hash = "sha256:a74408f69ba6271f71b9352ef4ed03dc53a31aa404d29b5d31f53bfecfee1440", size = 227419, upload-time = "2022-12-31T10:36:13.13Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/8e/5e/c86a5643653825d3c913719e788e41386bee415c2b87b4f955432f2de6b2/pypdf2-3.0.1-py3-none-any.whl", hash = "sha256:d16e4205cfee272fbdc0568b68d82be796540b1537508cef59388f839c191928", size = 232572, upload-time = "2022-12-31T10:36:10.327Z" },
-]
-
 [[package]]
 name = "pypinyin"
 version = "0.55.0"