diff --git a/Cargo.toml b/Cargo.toml
index 4bf125a..c705856 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,7 +22,7 @@ reqwest = "0.9"
 pbr = "1"
 libflate = "0.1"
 tar = "0.4"
-sha1 = "0.6"
+sha-1 = "0.8"
 sha2 = "0.8"
 digest = "0.8"
 toml = "0.4"
diff --git a/src/utils.rs b/src/utils.rs
index ef22318..e7c13f9 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -7,7 +7,7 @@ use std::ffi::OsString;
 
 use libflate::gzip;
 use tar;
-use sha1::Sha1;
+use sha1::{Sha1, Digest};
 
 #[derive(Debug)]
 pub struct ExecutionStatus {
@@ -106,9 +106,9 @@ pub fn get_sha1sum< P: AsRef< Path > >( path: P ) -> io::Result< String > {
     loop {
         match fp.read( &mut buffer )? {
             0 => break,
-            count => hasher.update( &buffer[ 0..count ] )
+            count => hasher.input( &buffer[ 0..count ] )
         }
     }
 
-    Ok( format!( "{}", hasher.digest() ) )
+    Ok( format!( "{:x}", hasher.result() ) )
 }
diff --git a/src/wasm_inline_js.rs b/src/wasm_inline_js.rs
index 4102c89..e90d741 100644
--- a/src/wasm_inline_js.rs
+++ b/src/wasm_inline_js.rs
@@ -1,7 +1,7 @@
 use std::collections::HashMap;
 use std::mem;
 
-use sha1::Sha1;
+use sha1::{Sha1, Digest};
 
 use wasm_context::{
     FnTy,
@@ -15,9 +15,8 @@ use wasm_context::{
 };
 
 fn hash( string: &str ) -> String {
-    let mut hasher = Sha1::new();
-    hasher.update( string.as_bytes() );
-    format!( "{}", hasher.digest() )
+    let hash = Sha1::digest( string.as_bytes() );
+    format!( "{:x}", hash )
 }
 
 pub struct JsSnippet {
diff --git a/src/wasm_js_snippet.rs b/src/wasm_js_snippet.rs
index 5d23d36..1f361d6 100644
--- a/src/wasm_js_snippet.rs
+++ b/src/wasm_js_snippet.rs
@@ -1,7 +1,7 @@
 use std::path::Path;
 use std::fs;
 
-use sha1::Sha1;
+use sha1::{Sha1, Digest};
 use serde_json;
 
 use wasm_context::{Context, FunctionKind};
@@ -15,9 +15,8 @@ pub struct Snippet {
 }
 
 fn hash( string: &str ) -> String {
-    let mut hasher = Sha1::new();
-    hasher.update( string.as_bytes() );
-    format!( "{}", hasher.digest() )
+    let hash = Sha1::digest( string.as_bytes() );
+    format!( "{:x}", hash )
 }
 
 pub fn process( target_dir: &Path, ctx: &Context ) -> Vec< JsSnippet > {
@@ -42,4 +41,4 @@ pub fn process( target_dir: &Path, ctx: &Context ) -> Vec< JsSnippet > {
     }
 
     snippets
-}
\ No newline at end of file
+}