diff --git a/build.gradle b/build.gradle
index b8cb024..db303d1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 import org.apache.tools.ant.filters.ReplaceTokens
 
 // SPAN application version
-version = "1.0"
+version = "1.1"
 
 buildscript {
     ext.kotlin_version = "1.6.10"
@@ -25,7 +25,7 @@ apply plugin: "kotlin"
 
 mainClassName = "org.jetbrains.bio.span.SpanCLA"
 
-sourceCompatibility = 11
+sourceCompatibility = 8
 targetCompatibility = sourceCompatibility
 compileKotlin { kotlinOptions.jvmTarget = sourceCompatibility }
 compileTestKotlin { kotlinOptions.jvmTarget = sourceCompatibility }
@@ -43,8 +43,8 @@ dependencies {
     implementation("org.jetbrains.kotlinx:kotlinx-support-jdk8:0.1")
 
     // Logging dependencies
-    implementation("ch.qos.logback:logback-classic:1.4.3")
-    implementation("ch.qos.logback:logback-core:1.4.3")
+    implementation("ch.qos.logback:logback-classic:1.3.5")
+    implementation("ch.qos.logback:logback-core:1.3.5")
 
 
     compile project(":bioinf-commons")