diff --git a/build.gradle.kts b/build.gradle.kts
index 111887ab53..2d1be98815 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -4,7 +4,7 @@ import com.unciv.build.BuildConfig.roboVMVersion
 
 // You'll still get kotlin-reflect-1.3.70.jar in your classpath, but will no longer be used
 configurations.all { resolutionStrategy {
-    force("org.jetbrains.kotlin:kotlin-reflect:1.4.30")
+    force("org.jetbrains.kotlin:kotlin-reflect:${com.unciv.build.BuildConfig.kotlinVersion}")
 } }
 
 
diff --git a/buildSrc/src/main/kotlin/BuildConfig.kt b/buildSrc/src/main/kotlin/BuildConfig.kt
index 82d9a4511e..64e3d262b0 100644
--- a/buildSrc/src/main/kotlin/BuildConfig.kt
+++ b/buildSrc/src/main/kotlin/BuildConfig.kt
@@ -1,7 +1,7 @@
 package com.unciv.build
 
 object BuildConfig {
-    const val kotlinVersion = "1.4.30"
+    const val kotlinVersion = "1.5.30"
     const val appName = "Unciv"
     const val appCodeNumber = 620
     const val appVersion = "3.16.11"
diff --git a/core/src/com/unciv/logic/automation/NextTurnAutomation.kt b/core/src/com/unciv/logic/automation/NextTurnAutomation.kt
index 8853545fe2..10911cc5c8 100644
--- a/core/src/com/unciv/logic/automation/NextTurnAutomation.kt
+++ b/core/src/com/unciv/logic/automation/NextTurnAutomation.kt
@@ -203,7 +203,8 @@ object NextTurnAutomation {
 
         // Bonus for luxury resources we can get from them
         value += cityState.detailedCivResources.count { it.resource.resourceType == ResourceType.Luxury
-                && !(it.resource in civInfo.detailedCivResources) }
+                && it.resource !in civInfo.detailedCivResources.map { it.resource }
+        }
 
         return value
     }