diff --git a/requirements.txt b/requirements.txt
index f7bb52604..81dcc0ce2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,10 +1,10 @@
 # BioSimSpace runtime requirements.
 
 # main
-sire~=2023.5.0
+#sire~=2023.5.0
 
 # devel
-#sire==2023.5.0.dev
+sire==2024.1.0.dev
 
 configargparse
 ipywidgets