diff --git a/requirements.txt b/requirements.txt
index 31cb609d557582f664e393911d1756f5cbf8b7d4..84f9ee6099b35774a6bf8dc48be39f639807c177 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,3 +13,4 @@ NRSur7dq2
 chainconsumer
 nestle
 deepdish
+ptemcee