diff --git a/src/nox.cr b/src/nox.cr
index 48046e0..7260f5c 100644
--- a/src/nox.cr
+++ b/src/nox.cr
@@ -10,7 +10,12 @@ module Nox
   def self.run(file : String)
     procfile = Nox::Procfile.parse_file(file)
     runner = Nox::Runner.new(procfile, output: STDOUT)
-    Signal::INT.trap { runner.interrupt_or_kill }
+    {% if compare_versions(Crystal::VERSION, "1.8.0") < 0 %}
+      {% raise "Windows requires >= 1.8.0" if flag?(:win32) %}
+      Signal::INT.trap { runner.interrupt_or_kill }
+    {% else %}
+      ::Process.on_interrupt { runner.interrupt_or_kill }
+    {% end %}
     runner.run
   end
 end
diff --git a/src/nox/process.cr b/src/nox/process.cr
index b52bc96..3cd1d4c 100644
--- a/src/nox/process.cr
+++ b/src/nox/process.cr
@@ -28,7 +28,15 @@ class Nox::Process
   def kill
     with_process do |process|
       print_bold "Attempting to kill..."
-      process.signal(Signal::KILL)
+      {% if compare_versions(Crystal::VERSION, "1.8.0") < 0 %}
+        {% if flag?(:win32) %}
+          process.terminate
+        {% else %}
+          process.signal(Signal::KILL)
+        {% end %}
+      {% else %}
+        process.terminate(graceful: false)
+      {% end %}
     end
   end