diff --git a/bindep.txt b/bindep.txt
index 5d1c22e..a2b2a25 100644
--- a/bindep.txt
+++ b/bindep.txt
@@ -1 +1,2 @@
 gcc [compile]
+libc6-dev [compile]
diff --git a/requirements.txt b/requirements.txt
index 74e7964..3f63568 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,8 @@
 six
 Jinja2
 Werkzeug<0.16
-Pygments
+Pygments<2.6;python_version<'3'
+Pygments;python_version>='3'
 SQLAlchemy
 PyMySQL
 simplejson