diff --git a/tools/release/install-webui-release-dependencies.sh b/tools/release/install-webui-release-dependencies.sh
index 5b45c82..e6df26a 100644
--- a/tools/release/install-webui-release-dependencies.sh
+++ b/tools/release/install-webui-release-dependencies.sh
@@ -72,5 +72,9 @@ while IFS=$'\t' read -r package_name spec; do
 done < "$GOVOPLAN_DEPS"
 
 if [[ "${#module_paths[@]}" -gt 0 ]]; then
-  retry npm install --prefer-online --no-save --install-links "${module_paths[@]}"
+  # Module repositories historically declared their local Vite/TypeScript
+  # toolchain as peers. The release host owns that build toolchain; resolving
+  # tagged source packages must not let an older, unused peer range block the
+  # verified composition.
+  retry npm install --prefer-online --no-save --install-links --legacy-peer-deps "${module_paths[@]}"
 fi