diff --git a/Cargo.toml b/Cargo.toml
index aadc5ba..ef71eab 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "actiondb"
-version = "0.2.0"
+version = "0.2.1"
 authors = ["Tibor Benke <tibor.benke@balabit.com>"]
 
 [[bin]]
diff --git a/src/bin/adbtool.rs b/src/bin/adbtool.rs
index 534f770..4379015 100644
--- a/src/bin/adbtool.rs
+++ b/src/bin/adbtool.rs
@@ -10,7 +10,7 @@ use actiondb::matcher::Factory;
 use log::{LogLevelFilter};
 use actiondb::utils::logger::StdoutLogger;
 
-const VERSION: &'static str = "0.2.0";
+const VERSION: &'static str = "0.2.1";
 const AUTHOR: &'static str = "Tibor Benke <tibor.benke@balabit.com>";
 const APPNAME: &'static str = "adbtool";
 
diff --git a/src/matcher/matcher/mod.rs b/src/matcher/matcher/mod.rs
index 08705aa..a407bf8 100644
--- a/src/matcher/matcher/mod.rs
+++ b/src/matcher/matcher/mod.rs
@@ -7,4 +7,5 @@ pub mod builder;
 pub trait Matcher: fmt::Debug {
     fn parse<'a, 'b>(&'a self, text: &'b str) -> Option<MatchResult<'a, 'b>>;
     fn add_pattern(&mut self, pattern: Pattern);
+    fn boxed_clone(&self) -> Box<Matcher>;
 }
diff --git a/src/matcher/trie/matcher.rs b/src/matcher/trie/matcher.rs
index 3fe99b6..d0c2842 100644
--- a/src/matcher/trie/matcher.rs
+++ b/src/matcher/trie/matcher.rs
@@ -10,4 +10,7 @@ impl Matcher for ParserTrie {
     fn add_pattern(&mut self, pattern: Pattern) {
         self.insert(pattern);
     }
+    fn boxed_clone(&self) -> Box<Matcher> {
+        Box::new(self.clone())
+    }
 }