diff --git a/aws-runtime/aws-config/jvm/test/aws/sdk/kotlin/runtime/auth/credentials/DefaultChainCredentialsProviderTest.kt b/aws-runtime/aws-config/jvm/test/aws/sdk/kotlin/runtime/auth/credentials/DefaultChainCredentialsProviderTest.kt
index af2ab69bd44..915f0565273 100644
--- a/aws-runtime/aws-config/jvm/test/aws/sdk/kotlin/runtime/auth/credentials/DefaultChainCredentialsProviderTest.kt
+++ b/aws-runtime/aws-config/jvm/test/aws/sdk/kotlin/runtime/auth/credentials/DefaultChainCredentialsProviderTest.kt
@@ -46,6 +46,10 @@ class DefaultChainCredentialsProviderTest {
         override suspend fun writeFile(path: String, data: ByteArray) {
             error("not needed for test")
         }
+
+        override fun fileExists(path: String): Boolean {
+            error("not needed for test")
+        }
     }
 
     class DefaultChainPlatformProvider(
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index d35a375d441..5872c46a61a 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -7,8 +7,8 @@ coroutines-version = "1.7.3"
 atomicfu-version = "0.22.0"
 
 # smithy-kotlin codegen and runtime are versioned separately
-smithy-kotlin-runtime-version = "1.0.1"
-smithy-kotlin-codegen-version = "0.30.2"
+smithy-kotlin-runtime-version = "1.0.2"
+smithy-kotlin-codegen-version = "0.30.3"
 
 # codegen
 smithy-version = "1.41.1"