diff --git a/Formula/crystal-lang.rb b/Formula/crystal-lang.rb
index 83ebed86ef87f..84546a3f3e105 100644
--- a/Formula/crystal-lang.rb
+++ b/Formula/crystal-lang.rb
@@ -1,8 +1,8 @@
 class CrystalLang < Formula
   desc "Fast and statically typed, compiled language with Ruby-like syntax"
   homepage "http://crystal-lang.org/"
-  url "https://github.com/manastech/crystal/archive/0.9.1.tar.gz"
-  sha256 "b6e04c9ec5f4bb2235211c635eb7da7522113cd0f4c3410cdd07bb3ae0de0c38"
+  url "https://github.com/manastech/crystal/archive/0.10.0.tar.gz"
+  sha256 "349172eacaf1cd1a2e984b2ecd02aa5c7e64c318f27afe58004bf955aa332922"
   head "https://github.com/manastech/crystal.git"
 
   bottle do
@@ -12,13 +12,13 @@ class CrystalLang < Formula
   end
 
   resource "boot" do
-    url "https://github.com/manastech/crystal/releases/download/0.9.0/crystal-0.9.0-1-darwin-x86_64.tar.gz"
-    sha256 "fd670b01dfa35805c8c57126dabebfe25c0942b673d9b3c6d5116d8b3f5ba53a"
+    url "https://github.com/manastech/crystal/releases/download/0.9.1/crystal-0.9.1-1-darwin-x86_64.tar.gz"
+    sha256 "1103edbb5d1ccb9555ce81d2b3630e7fbde93a75b2e368433859de0e4dc2717e"
   end
 
   resource "shards" do
-    url "https://github.com/ysbaddaden/shards/archive/v0.5.3.tar.gz"
-    sha256 "33a42709dc7f69b892f551b6a2d44b49d9d75b6e54e186fcb7534c8485f90139"
+    url "https://github.com/ysbaddaden/shards/archive/v0.5.4.tar.gz"
+    sha256 "759a925347fa69a9fbd070e0ba7d9be2d5fe409a9bc9a6d1d29090f2045e63c1"
   end
 
   option "without-release", "Do not build the compiler in release mode"