diff --git a/readthedocs.yml b/readthedocs.yml
index 02f0e7baa25ef2410a68479543e96ce0c8b9ebc5..1f2c1c214dfd5f8c983a4e0257fad035f29bbb57 100644
--- a/readthedocs.yml
+++ b/readthedocs.yml
@@ -1,2 +1,3 @@
 conda:
     file: docs/environment.yml
+    formats: []