diff --git a/apps/ministreaming/build.gradle b/apps/ministreaming/build.gradle
index 4152fecf7d..ee5001ea1c 100644
--- a/apps/ministreaming/build.gradle
+++ b/apps/ministreaming/build.gradle
@@ -1,3 +1,5 @@
+apply plugin: 'java-library'
+
 archivesBaseName = 'mstreaming'
 
 sourceSets {
@@ -14,7 +16,7 @@ sourceSets {
 }
 
 dependencies {
-    compile project(':core')
+    api project(':core')
 }
 
 configurations {
diff --git a/apps/streaming/build.gradle b/apps/streaming/build.gradle
index 2f6d9199e5..45bd7e1eea 100644
--- a/apps/streaming/build.gradle
+++ b/apps/streaming/build.gradle
@@ -1,3 +1,5 @@
+apply plugin: 'java-library'
+
 sourceSets {
     main {
         java {
@@ -12,7 +14,7 @@ sourceSets {
 }
 
 dependencies {
-    compile project(':core')
-    compile project(':apps:ministreaming')
-    testCompile project(path: ':apps:ministreaming', configuration: 'tests')
+    api project(':core')
+    api project(':apps:ministreaming')
+    testImplementation project(path: ':apps:ministreaming', configuration: 'tests')
 }
diff --git a/core/build.gradle b/core/build.gradle
index 76a211b4ae..5f37909d87 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -1,3 +1,5 @@
+apply plugin: 'java-library'
+
 archivesBaseName = 'i2p'
 
 sourceSets {
diff --git a/router/build.gradle b/router/build.gradle
index 86ac0fa991..e38bb9688b 100644
--- a/router/build.gradle
+++ b/router/build.gradle
@@ -1,3 +1,5 @@
+apply plugin: 'java-library'
+
 sourceSets {
     main {
         java {
@@ -12,8 +14,8 @@ sourceSets {
 }
 
 dependencies {
-    compile project(':core')
-    testCompile project(path: ':core', configuration: 'tests')
+    api project(':core')
+    testImplementation project(path: ':core', configuration: 'tests')
 }
 
 jar {