diff --git a/{{cookiecutter.repo_name}}/requirements/local.txt b/{{cookiecutter.repo_name}}/requirements/local.txt
index a802273c..e1934976 100644
--- a/{{cookiecutter.repo_name}}/requirements/local.txt
+++ b/{{cookiecutter.repo_name}}/requirements/local.txt
@@ -16,4 +16,6 @@ ipdb==0.8.1
 {% if cookiecutter.use_maildump == "y" -%}
 # Enables better email testing
 maildump==0.5.1
+# Required by maildump. Need to pin dependency to gevent beta to be Python 3-compatible.
+gevent==1.1b2
 {%- endif %}