diff --git a/poetry.lock b/poetry.lock
index faf3eb5..5d80cf8 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.2.0 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.2.1 and should not be changed by hand.
 
 [[package]]
 name = "aider-chat"
@@ -3777,14 +3777,14 @@ diagrams = ["jinja2", "railroad-diagrams"]
 
 [[package]]
 name = "pypdf"
-version = "5.7.0"
+version = "6.1.3"
 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-5.7.0-py3-none-any.whl", hash = "sha256:203379453439f5b68b7a1cd43cdf4c5f7a02b84810cefa7f93a47b350aaaba48"},
-    {file = "pypdf-5.7.0.tar.gz", hash = "sha256:68c92f2e1aae878bab1150e74447f31ab3848b1c0a6f8becae9f0b1904460b6f"},
+    {file = "pypdf-6.1.3-py3-none-any.whl", hash = "sha256:eb049195e46f014fc155f566fa20e09d70d4646a9891164ac25fa0cbcfcdbcb5"},
+    {file = "pypdf-6.1.3.tar.gz", hash = "sha256:8d420d1e79dc1743f31a57707cabb6dcd5b17e8b9a302af64b30202c5700ab9d"},
 ]
 
 [package.dependencies]
@@ -5930,4 +5930,4 @@ type = ["pytest-mypy"]
 [metadata]
 lock-version = "2.1"
 python-versions = ">=3.10, <3.12"
-content-hash = "8afa87528e8080a6910bc3078d7fdb5829f5e204f9d8eecabf836ef6b9028d05"
+content-hash = "ae68930696cafd4120ffcb223618ebc4ad334b7af5b6b4fb521cda2879f6b58f"
diff --git a/pyproject.toml b/pyproject.toml
index 0b0e98d..605f82f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ backoff = "*"
 pyalex = "*"
 pymupdf = "^1.22.3"
 pymupdf4llm = "*"
-pypdf = "^5.3.1"
+pypdf = ">=5.3.1,<7.0.0"
 anthropic = "*"
 google-generativeai = "*"
 openai = "*"