diff --git a/build.gradle b/build.gradle
index 80124e7ea0..171b16b68c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -163,9 +163,9 @@ configure(subprojects.findAll { !sourceless.contains(it.name) && it.name != core
     apply plugin: "kotlin-${platform}-conventions"
     dependencies {
         // See comment below for rationale, it will be replaced with "project" dependency
-        compile project(":$coreModule")
+        api project(":$coreModule")
         // the only way IDEA can resolve test classes
-        testCompile project(":$coreModule").kotlin.targets.jvm.compilations.test.output.allOutputs
+        testImplementation project(":$coreModule").kotlin.targets.jvm.compilations.test.output.allOutputs
     }
 }
 
diff --git a/buildSrc/src/main/kotlin/kotlin-jvm-conventions.gradle.kts b/buildSrc/src/main/kotlin/kotlin-jvm-conventions.gradle.kts
index 89007718c8..5f3193428c 100644
--- a/buildSrc/src/main/kotlin/kotlin-jvm-conventions.gradle.kts
+++ b/buildSrc/src/main/kotlin/kotlin-jvm-conventions.gradle.kts
@@ -22,12 +22,12 @@ if (rootProject.extra.get("jvm_ir_enabled") as Boolean) {
 }
 
 dependencies {
-    testCompile(kotlin("test"))
+    testImplementation(kotlin("test"))
     // Workaround to make addSuppressed work in tests
-    testCompile(kotlin("reflect"))
-    testCompile(kotlin("stdlib-jdk7"))
-    testCompile(kotlin("test-junit"))
-    testCompile("junit:junit:${version("junit")}")
+    testImplementation(kotlin("reflect"))
+    testImplementation(kotlin("stdlib-jdk7"))
+    testImplementation(kotlin("test-junit"))
+    testImplementation("junit:junit:${version("junit")}")
 }
 
 tasks.compileKotlin {
diff --git a/integration-testing/build.gradle b/integration-testing/build.gradle
index c5a551a05f..6efa3a14e6 100644
--- a/integration-testing/build.gradle
+++ b/integration-testing/build.gradle
@@ -92,10 +92,10 @@ task coreAgentTest(type: Test) {
 }
 
 dependencies {
-    testCompile "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
-    testCompile 'junit:junit:4.12'
-    npmTestCompile 'org.apache.commons:commons-compress:1.18'
-    npmTestCompile 'com.google.code.gson:gson:2.8.5'
+    testImplementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+    testImplementation 'junit:junit:4.12'
+    npmTestImplementation 'org.apache.commons:commons-compress:1.18'
+    npmTestImplementation 'com.google.code.gson:gson:2.8.5'
     debugAgentTestCompile project(':kotlinx-coroutines-core')
     debugAgentTestCompile project(':kotlinx-coroutines-debug')
     coreAgentTestCompile project(':kotlinx-coroutines-core')
diff --git a/kotlinx-coroutines-debug/build.gradle b/kotlinx-coroutines-debug/build.gradle
index 46f894d1a4..faaed91206 100644
--- a/kotlinx-coroutines-debug/build.gradle
+++ b/kotlinx-coroutines-debug/build.gradle
@@ -23,7 +23,7 @@ dependencies {
     shadowDeps "net.bytebuddy:byte-buddy:$byte_buddy_version"
     shadowDeps "net.bytebuddy:byte-buddy-agent:$byte_buddy_version"
     compileOnly "io.projectreactor.tools:blockhound:$blockhound_version"
-    testCompile "io.projectreactor.tools:blockhound:$blockhound_version"
+    testImplementation "io.projectreactor.tools:blockhound:$blockhound_version"
     api "net.java.dev.jna:jna:$jna_version"
     api "net.java.dev.jna:jna-platform:$jna_version"
 }
diff --git a/reactive/kotlinx-coroutines-rx2/build.gradle b/reactive/kotlinx-coroutines-rx2/build.gradle
index 73f76c3dfe..01c226a990 100644
--- a/reactive/kotlinx-coroutines-rx2/build.gradle
+++ b/reactive/kotlinx-coroutines-rx2/build.gradle
@@ -3,10 +3,10 @@
  */
 
 dependencies {
-    compile project(':kotlinx-coroutines-reactive')
-    testCompile project(':kotlinx-coroutines-reactive').sourceSets.test.output
-    testCompile "org.reactivestreams:reactive-streams-tck:$reactive_streams_version"
-    compile "io.reactivex.rxjava2:rxjava:$rxjava2_version"
+    api project(':kotlinx-coroutines-reactive')
+    testImplementation project(':kotlinx-coroutines-reactive').sourceSets.test.output
+    testImplementation "org.reactivestreams:reactive-streams-tck:$reactive_streams_version"
+    api "io.reactivex.rxjava2:rxjava:$rxjava2_version"
 }
 
 tasks.withType(dokka.getClass()) {
diff --git a/reactive/kotlinx-coroutines-rx3/build.gradle b/reactive/kotlinx-coroutines-rx3/build.gradle
index a5de40d8df..1760270d76 100644
--- a/reactive/kotlinx-coroutines-rx3/build.gradle
+++ b/reactive/kotlinx-coroutines-rx3/build.gradle
@@ -4,10 +4,10 @@
 targetCompatibility = JavaVersion.VERSION_1_8
 
 dependencies {
-    compile project(':kotlinx-coroutines-reactive')
-    testCompile project(':kotlinx-coroutines-reactive').sourceSets.test.output
-    testCompile "org.reactivestreams:reactive-streams-tck:$reactive_streams_version"
-    compile "io.reactivex.rxjava3:rxjava:$rxjava3_version"
+    api project(':kotlinx-coroutines-reactive')
+    testImplementation project(':kotlinx-coroutines-reactive').sourceSets.test.output
+    testImplementation "org.reactivestreams:reactive-streams-tck:$reactive_streams_version"
+    api "io.reactivex.rxjava3:rxjava:$rxjava3_version"
 }
 
 compileTestKotlin {