diff --git a/nixos/overlays/termius/retrive-latest-sri.sh b/nixos/overlays/termius/retrive-latest-sri.sh
new file mode 100755
index 0000000..52b5001
--- /dev/null
+++ b/nixos/overlays/termius/retrive-latest-sri.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl jq nix
+
+VERSION=$(curl -H 'X-Ubuntu-Series: 16' https://api.snapcraft.io/api/v1/snaps/details/termius-app | jq '.version')
+DOWNLOAD_URL=$(curl -H 'X-Ubuntu-Series: 16' https://api.snapcraft.io/api/v1/snaps/details/termius-app | jq '.download_url' -r)
+SHASUM=$(curl -H 'X-Ubuntu-Series: 16' https://api.snapcraft.io/api/v1/snaps/details/termius-app | jq '.download_sha512' -r)
+SRI512SUM=$(nix-hash --type sha512 --to-sri $SHASUM)
+
+echo "The latest SRI for version $VERSION is "
+echo "$SRI512SUM"