diff --git a/poetry.lock b/poetry.lock
index 8fb564e..b1444b3 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.1.2 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.2.0 and should not be changed by hand.
 
 [[package]]
 name = "aider-chat"
@@ -3766,14 +3766,14 @@ diagrams = ["jinja2", "railroad-diagrams"]
 
 [[package]]
 name = "pypdf"
-version = "5.5.0"
+version = "6.1.0"
 description = "A pure-python PDF library capable of splitting, merging, cropping, and transforming PDF files"
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.9"
 groups = ["main"]
 files = [
-    {file = "pypdf-5.5.0-py3-none-any.whl", hash = "sha256:2f61f2d32dde00471cd70b8977f98960c64e84dd5ba0d070e953fcb4da0b2a73"},
-    {file = "pypdf-5.5.0.tar.gz", hash = "sha256:8ce6a18389f7394fd09a1d4b7a34b097b11c19088a23cfd09e5008f85893e254"},
+    {file = "pypdf-6.1.0-py3-none-any.whl", hash = "sha256:6b34e4147df20978bf270af19826692e0485431a9d3944617b9533bc77efb695"},
+    {file = "pypdf-6.1.0.tar.gz", hash = "sha256:0cba440d024da5a2a9304f03cd645346052827b84c5a461c6123e24ed5a3b0b9"},
 ]
 
 [package.dependencies]
@@ -5811,4 +5811,4 @@ type = ["pytest-mypy"]
 [metadata]
 lock-version = "2.1"
 python-versions = ">=3.10, <3.12"
-content-hash = "272a24d380657a1d17756976a8dd3bca839acde43434507cef5ccec28ff5191a"
+content-hash = "9c6377cfd57c1499e29c33cdd402f349f8dfe54fa1f37185624f0245fcd3fe1f"
diff --git a/pyproject.toml b/pyproject.toml
index f3384f7..96528e5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ backoff = "*"
 pyalex = "*"
 pymupdf = "^1.22.3"
 pymupdf4llm = "*"
-pypdf = "^5.3.1"
+pypdf = ">=5.3.1,<7.0.0"
 anthropic = "*"
 google-generativeai = "*"
 openai = "*"