diff --git a/rust-runtime/aws-smithy-checksums/Cargo.toml b/rust-runtime/aws-smithy-checksums/Cargo.toml
index b473e7f66fc..8180f9e3830 100644
--- a/rust-runtime/aws-smithy-checksums/Cargo.toml
+++ b/rust-runtime/aws-smithy-checksums/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "aws-smithy-checksums"
-version = "0.63.9"
+version = "0.63.10"
 authors = [
     "AWS Rust SDK Team <aws-sdk-rust@amazon.com>",
     "Zelda Hessler <zhessler@amazon.com>",
diff --git a/rust-runtime/aws-smithy-checksums/src/lib.rs b/rust-runtime/aws-smithy-checksums/src/lib.rs
index b9b9d4de1e3..5aca86fe251 100644
--- a/rust-runtime/aws-smithy-checksums/src/lib.rs
+++ b/rust-runtime/aws-smithy-checksums/src/lib.rs
@@ -266,7 +266,7 @@ impl Sha1 {
 
     fn finalize(self) -> Bytes {
         use sha1::Digest;
-        Bytes::copy_from_slice(self.hasher.finalize().as_slice())
+        Bytes::copy_from_slice(self.hasher.finalize().as_ref())
     }
 
     // Size of the checksum in bytes
@@ -302,7 +302,7 @@ impl Sha256 {
 
     fn finalize(self) -> Bytes {
         use sha2::Digest;
-        Bytes::copy_from_slice(self.hasher.finalize().as_slice())
+        Bytes::copy_from_slice(self.hasher.finalize().as_ref())
     }
 
     // Size of the checksum in bytes
@@ -340,7 +340,7 @@ impl Md5 {
     #[warn(dead_code)]
     fn finalize(self) -> Bytes {
         use md5::Digest;
-        Bytes::copy_from_slice(self.hasher.finalize().as_slice())
+        Bytes::copy_from_slice(self.hasher.finalize().as_ref())
     }
 
     // Size of the checksum in bytes