diff --git a/python/66_plus_one b/python/66_plus_one
new file mode 100644
index 0000000..8343481
--- /dev/null
+++ b/python/66_plus_one
@@ -0,0 +1,9 @@
+class Solution:
+    def plusOne(self, digits: List[int]) -> List[int]:
+        carry = 1
+        for current_index in range(len(digits)-1, -1, -1):
+            carry, digits[current_index] = divmod(digits[current_index]+carry, 10)
+            current_index -= 1
+        if carry == 1:
+            digits.insert(0, 1)
+        return digits