MNEMONIC-545
diff --git a/mnemonic-core/build.gradle b/mnemonic-core/build.gradle
index ce081a4..64e638c 100644
--- a/mnemonic-core/build.gradle
+++ b/mnemonic-core/build.gradle
@@ -17,15 +17,15 @@
 
 description = 'mnemonic-core'
 dependencies {
-    compile group: 'org.apache.commons', name: 'commons-lang3', version:'3.4'
-    compile group: 'org.flowcomputing.commons', name: 'commons-resgc', version:'0.8.17'
-    compile group: 'org.flowcomputing.commons', name: 'commons-primitives', version:'0.6.1'
-    compile group: 'com.squareup', name: 'javapoet', version:'1.11.1'
-    compile group: 'org.slf4j', name: 'slf4j-api', version:'1.7.21'
-    compile group: 'org.slf4j', name: 'jul-to-slf4j', version:'1.7.21'
-    compile group: 'org.slf4j', name: 'jcl-over-slf4j', version:'1.7.21'
-    compile group: 'log4j', name: 'log4j', version:'1.2.17'
-    compile group: 'org.slf4j', name: 'slf4j-log4j12', version:'1.7.21'
-    testCompile group: 'org.testng', name: 'testng', version:'6.8.17'
+    compileOnly 'org.apache.commons:commons-lang3'
+    compileOnly 'org.flowcomputing.commons:commons-resgc'
+    compileOnly 'org.flowcomputing.commons:commons-primitives'
+    compileOnly 'com.squareup:javapoet'
+    compileOnly 'org.slf4j:slf4j-api'
+    compileOnly 'org.slf4j:jul-to-slf4j'
+    compileOnly 'org.slf4j:jcl-over-slf4j'
+    compileOnly 'log4j:log4j'
+    compileOnly 'org.slf4j:slf4j-log4j12'
+    testCompileOnly 'org.testng:testng'
 }
 test.useTestNG()