diff --git a/app/logical/sources/strategies/twitter.rb b/app/logical/sources/strategies/twitter.rb
index 279eaba70..43968b04d 100644
--- a/app/logical/sources/strategies/twitter.rb
+++ b/app/logical/sources/strategies/twitter.rb
@@ -1,14 +1,13 @@
 module Sources::Strategies
   class Twitter < Base
     PAGE = %r!\Ahttps?://(?:mobile\.)?twitter\.com!i
-    ASSET = %r!\A(https?://(?:video|pbs)\.twimg\.com/media/)!i
     PROFILE = %r!\Ahttps?://(?:mobile\.)?twitter.com/(?<username>[a-z0-9_]+)!i
 
     # https://pbs.twimg.com/media/EBGbJe_U8AA4Ekb.jpg
     # https://pbs.twimg.com/media/EBGbJe_U8AA4Ekb?format=jpg&name=900x900
     BASE_IMAGE_URL = %r!\Ahttps?://pbs\.twimg\.com/media!i
-    FILENAME1 = %r!(?<file_name>\w+)\.(?<file_ext>\w+)!i
-    FILENAME2 = %r!(?<file_name>\w+)\?.*format=(?<file_ext>\w+)!i
+    FILENAME1 = %r!(?<file_name>[a-zA-Z0-9_-]+)\.(?<file_ext>\w+)!i
+    FILENAME2 = %r!(?<file_name>[a-zA-Z0-9_-]+)\?.*format=(?<file_ext>\w+)!i
     IMAGE_URL = %r!#{BASE_IMAGE_URL}/#{Regexp.union(FILENAME1, FILENAME2)}!i
 
     # Twitter provides a list but it's inaccurate; some names ('intent') aren't
diff --git a/test/unit/sources/twitter_test.rb b/test/unit/sources/twitter_test.rb
index 86e789e0e..b39eb9060 100644
--- a/test/unit/sources/twitter_test.rb
+++ b/test/unit/sources/twitter_test.rb
@@ -189,6 +189,11 @@ module Sources
         assert_equal(["https://pbs.twimg.com/media/EBGp2YdUYAA19Uj.jpg:orig"], @site.image_urls)
         assert_equal("https://pbs.twimg.com/media/EBGp2YdUYAA19Uj.jpg:orig", @site.canonical_url)
       end
+
+      should "work for filenames containing dashes" do
+        @site = Sources::Strategies.find("https://pbs.twimg.com/media/EAjc-OWVAAAxAgQ.jpg", "https://twitter.com/asteroid_ill/status/1155420330128625664")
+        assert_equal("https://pbs.twimg.com/media/EAjc-OWVAAAxAgQ.jpg:orig", @site.image_url)
+      end
     end
 
     context "The source site for a https://twitter.com/i/web/status/:id url" do