diff --git a/Cargo.lock b/Cargo.lock
index f3493a3..f25347d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -475,9 +475,9 @@ dependencies = [
 
 [[package]]
 name = "aws-smithy-types"
-version = "1.2.11"
+version = "1.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38ddc9bd6c28aeb303477170ddd183760a956a03e083b3902a990238a7e3792d"
+checksum = "a28f6feb647fb5e0d5b50f0472c19a7db9462b74e2fec01bb0b44eedcc834e97"
 dependencies = [
  "base64-simd",
  "bytes",
diff --git a/Cargo.toml b/Cargo.toml
index 41b7d1c..2c87f8b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,7 +27,7 @@ aws-smithy-client        = "0.60"
 aws-smithy-http          = "0.60"
 aws-smithy-http-tower    = "0.60"
 aws-smithy-runtime-api   = "1.1.1"
-aws-smithy-types         = "1.1.1"
+aws-smithy-types         = "1.2.12"
 aws-smithy-types-convert = { version = "0.60", features = ["convert-chrono"] }
 aws-types                = { version = "1.1.1", features = [] }
 base64                   = "0.21.0"