diff --git a/lambda/requirements.txt b/lambda/requirements.txt
index 31c7850..708dbf5 100644
--- a/lambda/requirements.txt
+++ b/lambda/requirements.txt
@@ -10,20 +10,20 @@ aws-encryption-sdk==4.0.6 \
     --hash=sha256:35f62f775a8d4a6cb677a4a8927bb19acb3da35308405213f668396ee6298ad4 \
     --hash=sha256:ec03bfa2df64ef21417bd6ff749bb63e84149586a4f7fbe528ec6b443326ea9e
     # via aws-lambda-powertools
-aws-lambda-powertools==3.31.0 \
-    --hash=sha256:65f81f1c81e536fb04c20885b7bcd468d5cd232b813c11b6a1634b7d03bd3c8c \
-    --hash=sha256:fb6e7753ba1657490c8ed43bac9f44bef4c08bdcde2ddf9af2b35d31b061c5f6
+aws-lambda-powertools==3.31.1 \
+    --hash=sha256:b46e575c7e290c55fe81ae4a38d8b5c91238242a4644438f8b858ce535a4125c \
+    --hash=sha256:cd03f824bc11b59df727744fa9a419a01772d85fd0b15a67eee07f5472b37c77
 aws-xray-sdk==2.15.0 \
     --hash=sha256:422d62ad7d52e373eebb90b642eb1bb24657afe03b22a8df4a8b2e5108e278a3 \
     --hash=sha256:794381b96e835314345068ae1dd3b9120bd8b4e21295066c37e8814dbb341365
     # via aws-lambda-powertools
-boto3==1.43.41 \
-    --hash=sha256:0f56811f13677bfb4542daa0cce8532c95d9afd27b4ba7b681af36a0568624ad \
-    --hash=sha256:f48f862d2720ea9203ed2d842d436b8eb2d459ea31654a7ad7c0756fdf36c6b2
+boto3==1.43.51 \
+    --hash=sha256:a97057bb609fd38c80448db6a93db770786775dabd651401debf09816d4553d7 \
+    --hash=sha256:b5a416cc703db73b69b22bef563c89c1fb14a4b10a93628d3c7abc4dd1aaf979
     # via aws-encryption-sdk
-botocore==1.43.41 \
-    --hash=sha256:0cc6e79b30a2a98374f16a31cd9c7a9106a51b60650bd8c34cc8223f58ae6b8d \
-    --hash=sha256:27627d79af0df7dcb7ecf78d8d3d1310da09a5e9460be30bf759f1c2ed095ee8
+botocore==1.43.51 \
+    --hash=sha256:7c2c538c932bddc95834e177ce6f91dcc388c6a7934b4f8d0db13caa30e3e543 \
+    --hash=sha256:e0e5e88585fdb01dcb6b533ac2dd3f18d5d45092a14ccbfd330e3576a4152128
     # via
     #   aws-xray-sdk
     #   boto3
@@ -165,9 +165,9 @@ python-dotenv==1.2.2 \
     --hash=sha256:1d8214789a24de455a8b8bd8ae6fe3c6b69a5e3d64aa8a8e5d68e694bbcb285a \
     --hash=sha256:2c371a91fbd7ba082c2c1dc1f8bf89ca22564a087c2c287cd9b662adde799cf3
     # via pydantic-settings
-s3transfer==0.19.0 \
-    --hash=sha256:777cc2415536f1debadb5c2ef7779275d0fc0fe0e042411cdd6caebeb2685262 \
-    --hash=sha256:ce436931687addc4c1712d52d40b32f53e88315723f107ffa20ba82b05a0f685
+s3transfer==0.19.1 \
+    --hash=sha256:d3d6371dc3f1e5c5427b2b457bcf13bcf87bec334c95aed18642eae61f6926f3 \
+    --hash=sha256:d5fd7005ee39307455ad5f310b5ea67f4b1960d7fed5b3671ee50c249de675de
     # via boto3
 six==1.17.0 \
     --hash=sha256:4721f391ed90541fddacab5acf947aa0d3dc7d27b2e1e8eda2be8970586c3274 \
diff --git a/pyproject.toml b/pyproject.toml
index 2934823..ff0f98d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,9 +29,9 @@ Issues = "https://github.com/timpugh/lambda-powertools-reference/issues"
 # Lambda runtime — ships in the deployment bundle AND is installed locally
 # for unit tests that import `lambda/app.py`.
 lambda = [
-    "aws-lambda-powertools[all]==3.31.0",
+    "aws-lambda-powertools[all]==3.31.1",
     "aws-xray-sdk==2.15.0",
-    "boto3==1.43.41",
+    "boto3==1.43.51",
 ]
 
 # CDK infrastructure — used by `app.py`, `infrastructure/`, and the CDK stack
@@ -70,20 +70,20 @@ lint = [
     "radon==6.0.1",
     "xenon==0.9.3",
     "mypy==2.1.0",
-    "ruff==0.15.20",
+    "ruff==0.15.22",
     "pylint==4.0.6",
     "bandit==1.9.4",
     "pip-audit==2.10.1",
     "pre-commit==4.6.0",
-    "boto3-stubs==1.43.41",
+    "boto3-stubs==1.43.51",
     "pydantic==2.13.4",
 ]
 
 # Documentation build — used only by `make docs`. The Zensical static site
 # generator is pre-1.0, so versions are pinned exactly.
 docs = [
-    "zensical==0.0.47",
-    "mkdocstrings==1.0.4",
+    "zensical==0.0.51",
+    "mkdocstrings==1.0.6",
     "mkdocstrings-python==2.0.5",
 ]