diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index bd194b7192a..a4b332e155d 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -7,8 +7,8 @@ coroutines-version = "1.7.3"
 atomicfu-version = "0.23.1"
 
 # smithy-kotlin codegen and runtime are versioned separately
-smithy-kotlin-runtime-version = "1.0.6"
-smithy-kotlin-codegen-version = "0.30.7"
+smithy-kotlin-runtime-version = "1.0.7-SNAPSHOT"
+smithy-kotlin-codegen-version = "0.30.8-SNAPSHOT"
 
 # codegen
 smithy-version = "1.42.0"
diff --git a/services/s3/e2eTest/src/S3IntegrationTest.kt b/services/s3/e2eTest/src/S3IntegrationTest.kt
index b0c6b3071b2..bcb9526b206 100644
--- a/services/s3/e2eTest/src/S3IntegrationTest.kt
+++ b/services/s3/e2eTest/src/S3IntegrationTest.kt
@@ -326,7 +326,7 @@ class S3BucketOpsIntegrationTest {
                 key = keyName
                 body = ByteStream.fromString(contents)
                 checksumAlgorithm = ChecksumAlgorithm.Sha256
-                checksumSha256 = "blerg"
+                checksumSha256 = "LPJNul+wow4m6DsqxbninhsWHlwfp0JecwQzYpOLmCP="
             }
         }
         ex.message?.let {