diff --git a/build.gradle.kts b/build.gradle.kts
index 8a2ba3617..b1749bb98 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -14,8 +14,18 @@ allprojects {
         maven("https://dl.bintray.com/hotkeytlt/maven")
     }
 
-    group = "scientifik"
+    group = "kscience.kmath"
     version = kmathVersion
+
+    afterEvaluate {
+        extensions.findByType<org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformExtension>()?.run {
+            targets.all {
+                sourceSets.all {
+                    languageSettings.useExperimentalAnnotation("kotlin.contracts.ExperimentalContracts")
+                }
+            }
+        }
+    }
 }
 
 subprojects {
diff --git a/examples/src/main/kotlin/scientifik/kmath/operations/BigIntDemo.kt b/examples/src/main/kotlin/scientifik/kmath/operations/BigIntDemo.kt
new file mode 100644
index 000000000..10b038943
--- /dev/null
+++ b/examples/src/main/kotlin/scientifik/kmath/operations/BigIntDemo.kt
@@ -0,0 +1,8 @@
+package scientifik.kmath.operations
+
+fun main() {
+    val res = BigIntField {
+        number(1) * 2
+    }
+    println("bigint:$res")
+}
\ No newline at end of file
diff --git a/kmath-core/build.gradle.kts b/kmath-core/build.gradle.kts
index 7f9922de4..18c0cc771 100644
--- a/kmath-core/build.gradle.kts
+++ b/kmath-core/build.gradle.kts
@@ -1,6 +1,11 @@
-plugins { id("scientifik.mpp") }
+plugins {
+    id("scientifik.mpp")
+}
 
 kotlin.sourceSets {
-    all { languageSettings.useExperimentalAnnotation("kotlin.contracts.ExperimentalContracts") }
-    commonMain { dependencies { api(project(":kmath-memory")) } }
+    commonMain {
+        dependencies {
+            api(project(":kmath-memory"))
+        }
+    }
 }
diff --git a/kmath-memory/build.gradle.kts b/kmath-memory/build.gradle.kts
index 44a5ae24d..75b4f174e 100644
--- a/kmath-memory/build.gradle.kts
+++ b/kmath-memory/build.gradle.kts
@@ -1,2 +1,3 @@
-plugins { id("scientifik.mpp") }
-kotlin.sourceSets.all { languageSettings.useExperimentalAnnotation("kotlin.contracts.ExperimentalContracts") }
+plugins {
+    id("scientifik.mpp")
+}
\ No newline at end of file
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 487e1d87f..6601fd053 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -1,6 +1,6 @@
 pluginManagement {
 
-    val toolsVersion = "0.5.0"
+    val toolsVersion = "0.5.2"
 
     plugins {
         id("kotlinx.benchmark") version "0.2.0-dev-8"
@@ -20,14 +20,6 @@ pluginManagement {
         maven("https://dl.bintray.com/mipt-npm/dev")
         maven("https://dl.bintray.com/kotlin/kotlinx")
     }
-
-    resolutionStrategy {
-        eachPlugin {
-            when (requested.id.id) {
-                "scientifik.mpp", "scientifik.jvm", "scientifik.publish" -> useModule("scientifik:gradle-tools:$toolsVersion")
-            }
-        }
-    }
 }
 
 rootProject.name = "kmath"