diff --git a/shard.yml b/shard.yml
index cf18406..e685361 100644
--- a/shard.yml
+++ b/shard.yml
@@ -4,8 +4,4 @@ version: 0.1.0
 authors:
   - Jerome Gravel-Niquet <jeromegn@gmail.com>
 
-license: MIT
-
-development_dependencies:
-  slang:
-    github: jeromegn/slang
\ No newline at end of file
+license: MIT
\ No newline at end of file
diff --git a/spec/fixtures/test.raw b/spec/fixtures/test.raw
new file mode 100644
index 0000000..c57eff5
--- /dev/null
+++ b/spec/fixtures/test.raw
@@ -0,0 +1 @@
+Hello World!
\ No newline at end of file
diff --git a/spec/fixtures/test.slang b/spec/fixtures/test.slang
deleted file mode 100644
index e8325c7..0000000
--- a/spec/fixtures/test.slang
+++ /dev/null
@@ -1 +0,0 @@
-span = Process.pid
\ No newline at end of file
diff --git a/spec/kilt_spec.cr b/spec/kilt_spec.cr
index bce3d6f..81e02a2 100644
--- a/spec/kilt_spec.cr
+++ b/spec/kilt_spec.cr
@@ -7,11 +7,12 @@ end
 describe Kilt do
 
   it "renders ecr" do
-    render_file("spec/fixtures/test.ecr").should eq("<span>#{Process.pid}</span>")
+    Kilt.render("spec/fixtures/test.ecr").should eq("<span>#{Process.pid}</span>")
   end
 
-  it "renders slang" do
-    render_file("spec/fixtures/test.slang").should eq("<span>#{Process.pid}</span>")
+  it "renders registered engine" do
+    Kilt.register_engine "raw", Raw.embed
+    Kilt.render("spec/fixtures/test.raw").should eq("Hello World!")
   end
 
   it "works with classes" do
@@ -20,7 +21,7 @@ describe Kilt do
 
   it "raises with unsupported filetype" do
     expect_raises(Kilt::Exception, "Unsupported template engine for extension: \"abc\"") {
-      render_file("test.abc")
+      Kilt.render("test.abc")
     }
   end
 
diff --git a/spec/spec_helper.cr b/spec/spec_helper.cr
index 1c6ca4e..1984266 100644
--- a/spec/spec_helper.cr
+++ b/spec/spec_helper.cr
@@ -1,11 +1,8 @@
 require "spec"
 require "../src/kilt"
 
-require "slang"
-Kilt.register_engine("slang", embed_slang)
-
-macro render_file(filename)
-  String.build do |__io__|
-    Kilt.embed({{filename}}, "__io__")
+module Raw
+  macro embed(filename, io)
+    {{ io.id }} << {{`cat #{filename}`.stringify}}
   end
-end
+end
\ No newline at end of file
diff --git a/src/kilt/version.cr b/src/kilt/version.cr
index b4d3aec..558fa90 100644
--- a/src/kilt/version.cr
+++ b/src/kilt/version.cr
@@ -1,3 +1,3 @@
 module Kilt
-  VERSION = "0.2.0"
+  VERSION = "0.2.1"
 end