diff --git a/build.gradle b/build.gradle
index 9309678..5ed0b48 100644
--- a/build.gradle
+++ b/build.gradle
@@ -23,6 +23,7 @@ sourceSets {
 }
 
 dependencies {
+    api 'log4j:log4j:1.2.17'
     api 'org.antlr:antlr4:4.9.2'
     api 'org.apache.logging.log4j:log4j-core:2.14.1'
     api 'org.apache.logging.log4j:log4j-api:2.14.1'