diff --git a/tools/requirements.txt b/tools/requirements.txt
index 5cb6a95..76131a3 100644
--- a/tools/requirements.txt
+++ b/tools/requirements.txt
@@ -11,5 +11,5 @@
 # notes (2026-05-07). A pin keeps the verifier reproducible if
 # upstream stops mirroring to PyPI before our migration is ready.
 
-rns==1.3.5
+rns==1.3.8
 lxmf==1.0.1