diff --git a/poetry.lock b/poetry.lock
index 401342d87a9..a60b6af58f7 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1119,14 +1119,14 @@ pycparser = "*"
 
 [[package]]
 name = "cfn-lint"
-version = "1.40.3"
+version = "1.40.4"
 description = "Checks CloudFormation templates for practices and behaviour that could potentially be improved"
 optional = false
 python-versions = ">=3.9"
 groups = ["dev"]
 files = [
-    {file = "cfn_lint-1.40.3-py3-none-any.whl", hash = "sha256:d13987b5a1726c1b4e8e704352c24d8a697b7b721801b52cf9396279dcbf23ef"},
-    {file = "cfn_lint-1.40.3.tar.gz", hash = "sha256:3f51f7fc66be9a31762d17f821839b32071a891e2d71ed6ab33dbc71a4dec938"},
+    {file = "cfn_lint-1.40.4-py3-none-any.whl", hash = "sha256:7b8bf9dac877842633d8403a8b2c31874b21c9922d74813da34e552b4cf03915"},
+    {file = "cfn_lint-1.40.4.tar.gz", hash = "sha256:7c8bcf3cf5f2cf8d96fd30fdee1115bfc2480a4c619afc8bce36d551fbb228e1"},
 ]
 
 [package.dependencies]
@@ -5091,4 +5091,4 @@ valkey = ["valkey-glide"]
 [metadata]
 lock-version = "2.1"
 python-versions = ">=3.9,<4.0.0"
-content-hash = "1def4780f962b79ed04fb93cac6b94230efae2a1d4349cd9659986e7f6691cf1"
+content-hash = "123ebc834660a5e9ca3e759e8248e587625bd5542a169256deb3a965d2c570dc"
diff --git a/pyproject.toml b/pyproject.toml
index 4985fc93bea..ac52d981f55 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -113,7 +113,7 @@ urllib3 = [
     { version = ">=1.25.4,!=2.2.0,<3", python = ">=3.10" },
 ]
 requests = ">=2.32.0"
-cfn-lint = "1.40.3"
+cfn-lint = "1.40.4"
 mypy = "^1.1.1"
 types-python-dateutil = "^2.8.19.6"
 aws-cdk-aws-appsync-alpha = "^2.59.0a0"