diff --git a/requirements/core.txt b/requirements/core.txt
index 7cbfe29f..d00ca68b 100644
--- a/requirements/core.txt
+++ b/requirements/core.txt
@@ -1,4 +1,3 @@
 jsonschema>=3.2.0
-pyrsistent>=0.16.0
 requests>=2.21
 idna>=2.10