diff --git a/backend/requirements.txt b/backend/requirements.txt
index 499eae36dec..0864b113383 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -60,7 +60,7 @@ einops==0.8.1
 
 
 ftfy==6.2.3
-pypdf==4.3.1
+pypdf==6.6.0
 fpdf2==2.8.2
 pymdown-extensions==10.14.2
 docx2txt==0.8
diff --git a/pyproject.toml b/pyproject.toml
index 52260e45e22..3e033d6d472 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -66,7 +66,7 @@ dependencies = [
     "einops==0.8.1",
 
     "ftfy==6.2.3",
-    "pypdf==4.3.1",
+    "pypdf==6.6.0",
     "fpdf2==2.8.2",
     "pymdown-extensions==10.14.2",
     "docx2txt==0.8",