diff --git a/defaultAndroidSettings b/defaultAndroidSettings.gradle
similarity index 100%
rename from defaultAndroidSettings
rename to defaultAndroidSettings.gradle
diff --git a/extensions.gradle b/extensions.gradle
index fd1f470..0c108ed 100644
--- a/extensions.gradle
+++ b/extensions.gradle
@@ -13,11 +13,11 @@ allprojects {
             projectByName(name)
         }
 
-        mppProjectWithSerializationPresetPath = "${rootProject.projectDir.absolutePath}/mppProjectWithSerialization"
-        mppJavaProjectPresetPath = "${rootProject.projectDir.absolutePath}/mppJavaProject"
-        mppAndroidProjectPresetPath = "${rootProject.projectDir.absolutePath}/mppAndroidProject"
+        mppProjectWithSerializationPresetPath = "${rootProject.projectDir.absolutePath}/mppProjectWithSerialization.gradle"
+        mppJavaProjectPresetPath = "${rootProject.projectDir.absolutePath}/mppJavaProject.gradle"
+        mppAndroidProjectPresetPath = "${rootProject.projectDir.absolutePath}/mppAndroidProject.gradle"
 
-        defaultAndroidSettingsPresetPath = "${rootProject.projectDir.absolutePath}/defaultAndroidSettings"
+        defaultAndroidSettingsPresetPath = "${rootProject.projectDir.absolutePath}/defaultAndroidSettings.gradle"
 
         // publishGradlePath = "${rootProject.projectDir.absolutePath}/publish.gradle"
     }
diff --git a/mppAndroidProject b/mppAndroidProject.gradle
similarity index 100%
rename from mppAndroidProject
rename to mppAndroidProject.gradle
diff --git a/mppJavaProject b/mppJavaProject.gradle
similarity index 89%
rename from mppJavaProject
rename to mppJavaProject.gradle
index 79f0805..aa9cc2c 100644
--- a/mppJavaProject
+++ b/mppJavaProject.gradle
@@ -4,7 +4,9 @@ project.group = "$group"
 // apply from: "$publishGradlePath"
 
 kotlin {
-    jvm()
+    jvm {
+        compilations.main.kotlinOptions.useIR = true
+    }
 
     sourceSets {
         commonMain {
diff --git a/mppProjectWithSerialization b/mppProjectWithSerialization.gradle
similarity index 94%
rename from mppProjectWithSerialization
rename to mppProjectWithSerialization.gradle
index be201a9..26e5929 100644
--- a/mppProjectWithSerialization
+++ b/mppProjectWithSerialization.gradle
@@ -4,7 +4,9 @@ project.group = "$group"
 // apply from: "$publishGradlePath"
 
 kotlin {
-    jvm()
+    jvm {
+        compilations.main.kotlinOptions.useIR = true
+    }
     js (BOTH) {
         browser()
         nodejs()