diff --git a/ci/pin-msrv.sh b/ci/pin-msrv.sh
index 303fd4cd..927965e7 100755
--- a/ci/pin-msrv.sh
+++ b/ci/pin-msrv.sh
@@ -10,6 +10,7 @@ set -euo pipefail
 # cargo clean
 # rustup default 1.85.0
 
+cargo update -p idna_adapter --precise "1.2.1"
 cargo update -p icu_normalizer --precise "2.1.1"
 cargo update -p icu_provider --precise "2.1.1"
 cargo update -p icu_locale_core --precise "2.1.1"