diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b0bab4..2495569 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# 0.26.0 (05-08-2019)
+
+- Crystal 0.30.0 support :tada: [#548](https://github.com/kemalcr/kemal/pull/548) and [#544](https://github.com/kemalcr/kemal/pull/544). Thanks @bcardiff and @straight-shoota :pray:
+- Add support for serving files greater than 2^31 bytes [#546](https://github.com/kemalcr/kemal/pull/546). Thanks @omarroth :pray:
+- Properly measure request time using `Time.monotonic` [#527](https://github.com/kemalcr/kemal/pull/527). Thanks @spinscale :pray:
+
 # 0.25.2 (08-02-2019)
 
 - Add option to config to parse or not command line parameters [#483](https://github.com/kemalcr/kemal/pull/483). Thanks @diegogub :pray:
diff --git a/shard.yml b/shard.yml
index 025971a..b1629b1 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,5 +1,5 @@
 name: kemal
-version: 0.25.2
+version: 0.26.0
 
 authors:
   - Serdar Dogruyol <dogruyolserdar@gmail.com>
@@ -17,9 +17,9 @@ dependencies:
 
 development_dependencies:
   ameba:
-    github: veelenga/ameba
+    github: crystal-ameba/ameba
     version: ~> 0.10.0
 
-crystal: 0.27.2
+crystal: 0.30.0
 
 license: MIT
diff --git a/spec/helpers_spec.cr b/spec/helpers_spec.cr
index 77737bd..76fc318 100644
--- a/spec/helpers_spec.cr
+++ b/spec/helpers_spec.cr
@@ -63,6 +63,24 @@ describe "Macros" do
     end
   end
 
+  describe "#callbacks" do
+    it "can break block with halt macro from before_* callback" do
+      filter_middleware = Kemal::FilterHandler.new
+      filter_middleware._add_route_filter("GET", "/", :before) do |env|
+        halt env, status_code: 400, response: "Missing origin."
+      end
+
+      get "/" do |env|
+        "Hello world"
+      end
+
+      request = HTTP::Request.new("GET", "/")
+      client_response = call_request_on_app(request)
+      client_response.status_code.should eq(400)
+      client_response.body.should eq("Missing origin.")
+    end
+  end
+
   describe "#headers" do
     it "can add headers" do
       get "/headers" do |env|
diff --git a/src/kemal/route_handler.cr b/src/kemal/route_handler.cr
index 528d773..216616a 100644
--- a/src/kemal/route_handler.cr
+++ b/src/kemal/route_handler.cr
@@ -45,6 +45,7 @@ module Kemal
     # Processes the route if it's a match. Otherwise renders 404.
     private def process_request(context)
       raise Kemal::Exceptions::RouteNotFound.new(context) unless context.route_found?
+      return if context.response.closed?
       content = context.route.handler.call(context)
 
       if !Kemal.config.error_handlers.empty? && Kemal.config.error_handlers.has_key?(context.response.status_code)