diff --git a/check-history.sh b/check-history.sh
index 77990b7..03768ed 100755
--- a/check-history.sh
+++ b/check-history.sh
@@ -115,9 +115,9 @@ build_frontend() {
 
         [ "$VERBOSE" -eq 1 ] && echo "[BUILD_DEBUG] Running pnpm install..." || true
         if [ "$VERBOSE" -eq 1 ]; then
-            pnpm install --frozen-lockfile </dev/null
+            pnpm install --frozen-lockfile --prefer-offline </dev/null
         else
-            pnpm install --frozen-lockfile </dev/null >/dev/null 2>&1
+            pnpm install --frozen-lockfile --prefer-offline </dev/null >/dev/null 2>&1
         fi || {
             echo "❌ pnpm install failed"
             return 1
@@ -194,13 +194,19 @@ check_commit() {
             [ "$VERBOSE" -eq 1 ] && echo "[CHECK_DEBUG] No rfc-edge-frontend directory found, skipping frontend build" || true
         fi
 
-        echo "→ Running cargo check…"
-        [ "$VERBOSE" -eq 1 ] && echo "[CHECK_DEBUG] Starting cargo check" || true
-        if ! cargo check --quiet; then
-            echo "❌ Cargo check failed"
-            exit 1
+        # Check if Rust files changed in this commit
+        if git diff --name-only "${commit}^..${commit}" 2>/dev/null | grep -qE '\.(rs|toml)$|Cargo\.lock'; then
+            [ "$VERBOSE" -eq 1 ] && echo "[CHECK_DEBUG] Rust files changed, running cargo check" || true
+            echo "→ Running cargo check…"
+            if ! cargo check --quiet; then
+                echo "❌ Cargo check failed"
+                exit 1
+            fi
+            [ "$VERBOSE" -eq 1 ] && echo "[CHECK_DEBUG] Cargo check completed successfully" || true
+        else
+            [ "$VERBOSE" -eq 1 ] && echo "[CHECK_DEBUG] No Rust files changed, skipping cargo check" || true
+            echo "→ Skipping cargo check (no Rust changes)"
         fi
-        [ "$VERBOSE" -eq 1 ] && echo "[CHECK_DEBUG] Cargo check completed successfully" || true
 
         echo "✓ OK"
     ) >"$log" 2>&1