diff --git a/samples/androidNativeActivity/gradle.properties b/samples/androidNativeActivity/gradle.properties
index 625a10f9ee1..83299138b4f 100644
--- a/samples/androidNativeActivity/gradle.properties
+++ b/samples/androidNativeActivity/gradle.properties
@@ -7,7 +7,7 @@ kotlin.code.style=official
 
 # Pin Kotlin version:
 # CHANGE_VERSION_WITH_RELEASE
-kotlin_version=1.3.72
+kotlin_version=1.4.0
 
 # Use custom Kotlin/Native home:
 kotlin.native.home=../../dist
diff --git a/samples/calculator/gradle.properties b/samples/calculator/gradle.properties
index d6152f689e5..548fe3666f1 100644
--- a/samples/calculator/gradle.properties
+++ b/samples/calculator/gradle.properties
@@ -7,7 +7,7 @@ kotlin.code.style=official
 
 # Pin Kotlin version:
 # CHANGE_VERSION_WITH_RELEASE
-kotlin_version=1.3.72
+kotlin_version=1.4.0
 
 # Use custom Kotlin/Native home:
 kotlin.native.home=../../../dist
diff --git a/samples/cocoapods/kotlin-library/gradle.properties b/samples/cocoapods/kotlin-library/gradle.properties
index d6152f689e5..548fe3666f1 100644
--- a/samples/cocoapods/kotlin-library/gradle.properties
+++ b/samples/cocoapods/kotlin-library/gradle.properties
@@ -7,7 +7,7 @@ kotlin.code.style=official
 
 # Pin Kotlin version:
 # CHANGE_VERSION_WITH_RELEASE
-kotlin_version=1.3.72
+kotlin_version=1.4.0
 
 # Use custom Kotlin/Native home:
 kotlin.native.home=../../../dist
diff --git a/samples/coverage/build.gradle.kts b/samples/coverage/build.gradle.kts
index 2391ccffd64..ccee633f611 100644
--- a/samples/coverage/build.gradle.kts
+++ b/samples/coverage/build.gradle.kts
@@ -6,17 +6,8 @@ plugins {
 
 kotlin {
     sourceSets {
-        val commonMain by getting {
-            dependencies {
-                implementation(kotlin("stdlib-common"))
-            }
-        }
-        val commonTest by getting {
-            dependencies {
-                implementation(kotlin("test-common"))
-                implementation(kotlin("test-annotations-common"))
-            }
-        }
+        val commonMain by getting
+        val commonTest by getting
     }
 
     // Determine host preset.
diff --git a/samples/gradle.properties b/samples/gradle.properties
index d86edf5a18c..5a87656330f 100644
--- a/samples/gradle.properties
+++ b/samples/gradle.properties
@@ -6,7 +6,7 @@ kotlin.code.style=official
 
 # Pin Kotlin version:
 # CHANGE_VERSION_WITH_RELEASE
-kotlin_version=1.3.72
+kotlin_version=1.4.0
 
 # Use custom Kotlin/Native home:
 kotlin.native.home=../../dist
diff --git a/samples/uikit/build.gradle.kts b/samples/uikit/build.gradle.kts
index 29d9ff200a3..f92ee8414d4 100644
--- a/samples/uikit/build.gradle.kts
+++ b/samples/uikit/build.gradle.kts
@@ -2,7 +2,7 @@ import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
 import org.jetbrains.kotlin.gradle.plugin.mpp.NativeBuildType
 
 plugins {
-    kotlin("multiplatform") // version "1.3.60-eap-23" apply true
+    kotlin("multiplatform")
 }
 
 allprojects {
@@ -39,7 +39,7 @@ kotlin {
     // We declare only one target (either arm64 or x64)
     // to workaround lack of common platform libraries
     // for both device and simulator.
-    val ios = if (!target.simulator ) {
+    val ios = if (!target.simulator) {
         // Device.
         iosArm64("ios")
     } else {
diff --git a/samples/watchos/build.gradle.kts b/samples/watchos/build.gradle.kts
index ff97e53cf85..74bcd4b7a1e 100644
--- a/samples/watchos/build.gradle.kts
+++ b/samples/watchos/build.gradle.kts
@@ -2,7 +2,7 @@ import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
 import org.jetbrains.kotlin.gradle.plugin.mpp.NativeBuildType
 
 plugins {
-    kotlin("multiplatform") // version "1.3.60-eap-23" apply true
+    kotlin("multiplatform")
 }
 
 allprojects {