diff --git a/requirements.txt b/requirements.txt
index e388207bf87985fb01086b86ec97232dfbbc9528..a06dba950c7e3e5536e0be9974d41370c30bd324 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+corner
 numpy
 matplotlib>=1.4
 scipy