diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
deleted file mode 100644
index cc4bf741..00000000
--- a/buildSrc/build.gradle.kts
+++ /dev/null
@@ -1,14 +0,0 @@
-plugins {
-  `kotlin-dsl`
-}
-
-kotlinDslPluginOptions {
-  experimentalWarning.set(false)
-}
-
-// Required since Gradle 4.10+.
-repositories {
-  jcenter()
-  maven(url = "https://dl.bintray.com/kotlin/kotlin-eap/")
-  maven(url = "https://dl.bintray.com/kotlin/kotlin-dev/")
-}
diff --git a/buildSrc/settings.gradle.kts b/buildSrc/settings.gradle.kts
deleted file mode 100644
index e69de29b..00000000
diff --git a/buildSrc/src/main/kotlin/BuildHelpers.kt b/buildSrc/src/main/kotlin/BuildHelpers.kt
deleted file mode 100644
index ea055ff6..00000000
--- a/buildSrc/src/main/kotlin/BuildHelpers.kt
+++ /dev/null
@@ -1,3 +0,0 @@
-import org.gradle.api.publish.maven.MavenPom
-
-
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index b32a98ba..3e69e9b2 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -2,7 +2,7 @@
 kotlin = "1.6.0-RC"
 okhttp = "5.0.0-alpha.2"
 junit = "5.7.1"
-okio = "3.0.0-alpha.10"
+okio = "3.0.0"
 
 [libraries]
 kotlin-stdlib = { module = "org.jetbrains.kotlin:kotlin-stdlib", version.ref = "kotlin" }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 2b76039e..fbce071a 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3-rc-2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/src/test/kotlin/com/baulsupp/okurl/util/TestUtil.kt b/src/test/kotlin/com/baulsupp/okurl/util/TestUtil.kt
index c2c485e3..2fe431d9 100644
--- a/src/test/kotlin/com/baulsupp/okurl/util/TestUtil.kt
+++ b/src/test/kotlin/com/baulsupp/okurl/util/TestUtil.kt
@@ -37,14 +37,12 @@ object TestUtil {
     }
   }
 
-  @Synchronized
   suspend fun assumeHasToken(
     serviceDefinition: ServiceDefinition<out Any>
   ) {
     initialise()
 
-    val token = credentialsStore.get(serviceDefinition,
-      DefaultToken)
+    val token = credentialsStore.get(serviceDefinition, DefaultToken)
 
     assumeTrue(token != null)
   }