diff --git a/README.md b/README.md
index 94f52d1..6f743d2 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ Rust XML processor with some features of XPath 2.0 / 3.0 / 3.1.
 Building DOM tree can be done by calling <strong>new_document()</strong> function.
 The DOM tree can be turned into String.
 
-```
+```rust
 use amxml::dom::*;
 let xml_string = r#"<?xml version="1.0"?><article>foo</article>"#;
 let doc = new_document(&xml_string).unwrap();
@@ -34,7 +34,7 @@ First XPath example is somewhat straightforward.
 that match with the given XPath,
 and apply the function (closure) to these nodes.
 
-```
+```rust
 use amxml::dom::*;
 let xml = r#"<root><a img="a1"/><a img="a2"/></root>"#;
 let doc = new_document(xml).unwrap();
@@ -50,7 +50,7 @@ This finds the clerk OR engineer (NOT advisor) who has no subordinates.
 Note that clerks and enginners appear in <em>document order</em>
 in <strong>each_node()</strong> iteration.
 
-```
+```rust
 use amxml::dom::*;
 let xml = r#"
 <root>
@@ -86,7 +86,7 @@ numeric, string values as well as DOM node.
 The example below lists up the students, and whether or not each student
 got 80 or more points in <em>every</em> (not <em>some</em>) examination.
 
-```
+```rust
 use amxml::dom::*;
 let xml = r#"
 <root>