diff --git a/Gemfile b/Gemfile
index 1b7c6dc627574b52cf118348211ea52c66afb683..eb3eaa6aacaf026314400310db4f064858b64665 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem "blather", git: "https://github.com/singpolyma/blather.git", branch: "ergono
 gem "braintree"
 gem "dhall"
 gem "em-hiredis"
-gem "em-http-request"
+gem "em-http-request", git: "https://github.com/singpolyma/em-http-request", branch: "fix-letsencrypt"
 gem "em-pg-client", git: "https://github.com/royaltm/ruby-em-pg-client"
 gem "em-synchrony"
 gem "em_promise.rb", "~> 0.0.3"