diff --git a/requirements.txt b/requirements.txt
index 104f7cc..837cadb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-mmcif==0.88.0
+mmcif==0.89.0
 numpy==1.26.4
 orjson==3.10.6
 rnapolis==0.3.17