diff --git a/build.gradle.kts b/build.gradle.kts
index ddb403a..4e3b69b 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -56,7 +56,7 @@ sourceSets {
 tasks.withType<KotlinCompile> {
   kotlinOptions {
     jvmTarget = "11"
-    freeCompilerArgs = listOf("-Xjsr305=strict -progressive")
+    freeCompilerArgs += "-Xjsr305=strict -progressive"
     javaParameters = true
   }
   finalizedBy("generateTSTypes")
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 51b41a8..6043638 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,4 +1,4 @@
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.1.1-bin.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
diff --git a/src/app/Dependencies.kt b/src/app/Dependencies.kt
index c36648e..aaf1d29 100644
--- a/src/app/Dependencies.kt
+++ b/src/app/Dependencies.kt
@@ -11,9 +11,7 @@ import io.jooby.Kooby
 import io.jooby.json.JacksonModule
 import io.jooby.put
 import java.net.http.HttpClient
-import java.time.Duration
 import java.time.Duration.ofSeconds
-import java.time.temporal.ChronoUnit.SECONDS
 
 val objectMapper = JacksonModule.create().disable(WRITE_DATES_AS_TIMESTAMPS).setSerializationInclusion(NON_NULL)
   .configure(FAIL_ON_UNKNOWN_PROPERTIES, false).registerModule(KotlinModule())!!