diff --git a/2025/Cpp/Day02/Day02.cpp b/2025/Cpp/Day02/Day02.cpp
index aa85452..be01ad2 100644
--- a/2025/Cpp/Day02/Day02.cpp
+++ b/2025/Cpp/Day02/Day02.cpp
@@ -112,6 +112,9 @@ public:
             auto left = range.left();
             auto right = range.right();
 
+        #ifdef _OPENMP
+            #pragma omp parallel for reduction(+ : sum)
+        #endif
             for (Range::range_t i = left; i <= right; i++) {
                 if (!isValidPart01(std::to_string(i))) 
                     sum += i;