I am not used to hocon...

src/main/java/com/jaimemartz/playerbalancer/settings/props/GeneralProps.java

@@ -20,6 +20,9 @@ public class GeneralProps {
     @Setting(value = "fallback-principal")
     private boolean fallbackPrincipal;
 
+    @Setting
+    private String version;
+
     public boolean isEnabled() {
         return enabled;
     }
@@ -60,6 +63,14 @@ public class GeneralProps {
         this.fallbackPrincipal = fallbackPrincipal;
     }
 
+    public String getVersion() {
+        return version;
+    }
+
+    public void setVersion(String version) {
+        this.version = version;
+    }
+
     @Override
     public String toString() {
         return "GeneralProps{" +
@@ -68,6 +79,7 @@ public class GeneralProps {
                 ", autoReload=" + autoReload +
                 ", redisBungee=" + redisBungee +
                 ", fallbackPrincipal=" + fallbackPrincipal +
+                ", version='" + version + '\'' +
                 '}';
     }
 }

src/main/resources/default.conf

@@ -14,11 +14,11 @@ general {
   # When true, the plugin will get player counts from RedisBungee
   redis-bungee=false
 
-  # When true, the plugin will print less messages while loading
+  # When true, this plugin will print less messages when loading
   silent=false
 
   # Do not modify this
-  version: "${project.version}"
+  version="${project.version}"
 }
 
 # Effectively remove (i.e comment) a message to disable it