diff --git a/telegrambots-abilities/src/main/java/org/telegram/abilitybots/api/bot/BaseAbilityBot.java b/telegrambots-abilities/src/main/java/org/telegram/abilitybots/api/bot/BaseAbilityBot.java
index 01b18da4..455a43ae 100644
--- a/telegrambots-abilities/src/main/java/org/telegram/abilitybots/api/bot/BaseAbilityBot.java
+++ b/telegrambots-abilities/src/main/java/org/telegram/abilitybots/api/bot/BaseAbilityBot.java
@@ -106,7 +106,7 @@ public abstract class BaseAbilityBot extends DefaultAbsSender implements Ability
     private final String botUsername;
 
     // Ability registry
-    protected final List<AbilityExtension> extensions = new ArrayList<>();
+    private final List<AbilityExtension> extensions = new ArrayList<>();
     private Map<String, Ability> abilities;
     private Map<String, Stats> stats;
 
@@ -273,6 +273,18 @@ public abstract class BaseAbilityBot extends DefaultAbsSender implements Ability
         return false;
     }
 
+    protected void addExtension(AbilityExtension extension) {
+        this.extensions.add(extension);
+    }
+
+    protected void addExtensions(AbilityExtension... extensions) {
+        this.extensions.addAll(Arrays.asList(extensions));
+    }
+
+    protected void addExtensions(Collection<AbilityExtension> extensions) {
+        this.extensions.addAll(extensions);
+    }
+
     /**
      * Registers the declared abilities using method reflection. Also, replies are accumulated using the built abilities and standalone methods that return a Reply.
      * <p>