diff --git a/lib/angelo/server.rb b/lib/angelo/server.rb
index 3ab7fd1..181e968 100644
--- a/lib/angelo/server.rb
+++ b/lib/angelo/server.rb
@@ -114,7 +114,7 @@ def static! meth, connection, request, local_path
 
     def etag_for local_path
       fs = File::Stat.new local_path
-      OpenSSL::Digest::SHA.hexdigest fs.ino.to_s + fs.size.to_s + fs.mtime.to_s
+      OpenSSL::Digest::SHA1.hexdigest fs.ino.to_s + fs.size.to_s + fs.mtime.to_s
     end
 
     def sse_event *a; Base.sse_event *a; end