diff --git a/smack-debug-slf4j/build.gradle b/smack-debug-slf4j/build.gradle
index 9c2272729..35d904a7e 100644
--- a/smack-debug-slf4j/build.gradle
+++ b/smack-debug-slf4j/build.gradle
@@ -5,5 +5,5 @@ Connect your favourite slf4j backend of choice to get output inside of it"""
 
 dependencies {
     api project(':smack-core')
-    implementation 'org.slf4j:slf4j-api:[1.7,1.8)'
+    implementation 'org.slf4j:slf4j-api:[1.7,2.0)'
 }