diff --git a/gradle.properties b/gradle.properties
index f7dfebfe89..16037aa45f 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -22,3 +22,5 @@ codegenVersion=0.35.11-SNAPSHOT
 # FIXME Remove after Dokka 2.0 Gradle plugin is stable
 org.jetbrains.dokka.experimental.gradle.pluginMode=V2Enabled
 org.jetbrains.dokka.experimental.gradle.pluginMode.noWarn=true
+
+org.gradle.parallel=true
\ No newline at end of file
diff --git a/runtime/runtime-core/common/test/aws/smithy/kotlin/runtime/net/HostResolverTest.kt b/runtime/runtime-core/common/test/aws/smithy/kotlin/runtime/net/HostResolverTest.kt
index 3bad624976..cdc55731d4 100644
--- a/runtime/runtime-core/common/test/aws/smithy/kotlin/runtime/net/HostResolverTest.kt
+++ b/runtime/runtime-core/common/test/aws/smithy/kotlin/runtime/net/HostResolverTest.kt
@@ -5,6 +5,8 @@
 package aws.smithy.kotlin.runtime.net
 
 import kotlinx.coroutines.test.runTest
+import org.junit.jupiter.api.parallel.Execution
+import org.junit.jupiter.api.parallel.ExecutionMode
 import kotlin.test.*
 
 class HostResolverTest {
@@ -24,6 +26,7 @@ class HostResolverTest {
         }
     }
 
+    @Execution(ExecutionMode.SAME_THREAD)
     @Test
     fun testResolveIpv4Address() = runTest {
         val addresses = HostResolver.Default.resolve("127.0.0.1")