diff --git a/lambdas/aurora-pgvector-init/requirements.txt b/lambdas/aurora-pgvector-init/requirements.txt
index a00f68f..50e90b2 100644
--- a/lambdas/aurora-pgvector-init/requirements.txt
+++ b/lambdas/aurora-pgvector-init/requirements.txt
@@ -1 +1 @@
-boto3>=1.43.53,<2.0
+boto3>=1.43.56,<2.0
diff --git a/lambdas/library-ingest/requirements.txt b/lambdas/library-ingest/requirements.txt
index 338fa98..1c95255 100644
--- a/lambdas/library-ingest/requirements.txt
+++ b/lambdas/library-ingest/requirements.txt
@@ -1,2 +1,2 @@
-boto3>=1.43.53,<2.0
+boto3>=1.43.56,<2.0
 httpx>=0.28.1,<1.0
diff --git a/lambdas/pdf-extract/requirements.txt b/lambdas/pdf-extract/requirements.txt
index c166abe..adcfa6a 100644
--- a/lambdas/pdf-extract/requirements.txt
+++ b/lambdas/pdf-extract/requirements.txt
@@ -1,3 +1,3 @@
 pdfplumber>=0.11.10,<1.0
-boto3>=1.43.53,<2.0
+boto3>=1.43.56,<2.0
 httpx>=0.28.1,<1.0
diff --git a/lambdas/pdf-generate/requirements.txt b/lambdas/pdf-generate/requirements.txt
index 55ff4a9..2c7bf3b 100644
--- a/lambdas/pdf-generate/requirements.txt
+++ b/lambdas/pdf-generate/requirements.txt
@@ -1,3 +1,3 @@
 reportlab>=5.0.0,<6.0
-boto3>=1.43.53,<2.0
+boto3>=1.43.56,<2.0
 httpx>=0.28.1,<1.0
diff --git a/lambdas/suggestions/requirements.txt b/lambdas/suggestions/requirements.txt
index 338fa98..1c95255 100644
--- a/lambdas/suggestions/requirements.txt
+++ b/lambdas/suggestions/requirements.txt
@@ -1,2 +1,2 @@
-boto3>=1.43.53,<2.0
+boto3>=1.43.56,<2.0
 httpx>=0.28.1,<1.0