diff --git a/dev-requirements.txt b/dev-requirements.txt
index db04ebd..182889c 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -41,7 +41,7 @@ mypy==0.730
 nodeenv==1.3.3            # via pre-commit
 packaging==19.0           # via pytest, pytest-sugar, tox
 pathtools==0.1.2          # via watchdog
-pex==1.6.11
+pex==1.6.12
 pkginfo==1.5.0.1          # via twine
 pluggy==0.12.0            # via pytest, tox
 pre-commit==1.18.3