diff --git a/a2png b/a2png
index 3e6c81b..9099a8f 160000
--- a/a2png
+++ b/a2png
@@ -1 +1 @@
-Subproject commit 3e6c81b8751074ef3d0160e9586b78b2293e169e
+Subproject commit 9099a8fa26f79f73c58ceeb88276e9c539251bb0
diff --git a/app/services/asciicast_image_generator.rb b/app/services/asciicast_image_generator.rb
index c065baa..8168a9e 100644
--- a/app/services/asciicast_image_generator.rb
+++ b/app/services/asciicast_image_generator.rb
@@ -14,8 +14,9 @@ class AsciicastImageGenerator
       asciicast_url = asciicast.file.absolute_url
       image_path = "#{dir}/#{asciicast.image_filename}"
       time = asciicast.snapshot_at || asciicast.duration / 2
+      theme = AsciicastDecorator.new(asciicast).theme_name
 
-      generate_png_file(asciicast_url, image_path, time)
+      rasterizer.generate_image(asciicast_url, image_path, time, PIXEL_DENSITY, theme)
       image_width, image_height = get_size(image_path)
 
       update_asciicast(asciicast, image_path, image_width, image_height)
@@ -24,10 +25,6 @@ class AsciicastImageGenerator
 
   private
 
-  def generate_png_file(asciicast_url, image_path, time)
-    rasterizer.generate_image(asciicast_url, image_path, time)
-  end
-
   def get_size(image_path)
     width, height = image_inspector.get_size(image_path)
 
diff --git a/app/services/rasterizer.rb b/app/services/rasterizer.rb
index 7cfca71..bc7df00 100644
--- a/app/services/rasterizer.rb
+++ b/app/services/rasterizer.rb
@@ -4,8 +4,8 @@ class Rasterizer
 
   BINARY_PATH = (Rails.root + "a2png" + "a2png.sh").to_s
 
-  def generate_image(asciicast_url, out_path, time)
-    o, e, t = Open3.capture3("#{BINARY_PATH} '#{asciicast_url}' #{out_path} #{time}")
+  def generate_image(asciicast_url, out_path, time, scale, theme)
+    o, e, t = Open3.capture3("#{BINARY_PATH} -s #{scale} -t #{theme} '#{asciicast_url}' '#{out_path}' #{time}")
 
     if t.exitstatus != 0
       raise RuntimeError, "Couldn't generate image from #{asciicast_url}:\n#{o}\n#{e}"
diff --git a/spec/services/asciicast_image_generator_spec.rb b/spec/services/asciicast_image_generator_spec.rb
index c9313ee..a291d62 100644
--- a/spec/services/asciicast_image_generator_spec.rb
+++ b/spec/services/asciicast_image_generator_spec.rb
@@ -9,7 +9,7 @@ describe AsciicastImageGenerator, needs_phantomjs_2_bin: true do
     let(:asciicast) {
       create(
         :asciicast,
-        theme_name: 'tango',
+        theme_name: 'asciinema',
         file: Asciinema::FixtureHelpers.fixture_file('1/screenshot.json', 'application/json')
       )
     }