diff --git a/prereqs/pips/app_requirements.txt b/prereqs/pips/app_requirements.txt
index fa92060671..e77eb23d12 100644
--- a/prereqs/pips/app_requirements.txt
+++ b/prereqs/pips/app_requirements.txt
@@ -14,7 +14,7 @@ Cython==3.0.12
 filelock==3.17.0
 grako==3.16.5
 html2text==2024.2.26
-ihm==1.3
+ihm==2.2
 imagecodecs==2024.6.1
 ipykernel==6.29.5
 # if ipython updated, make sure autocompletion still works (e.g. "mi<tab>" becomes min) and if not then