diff --git a/Dockerfile b/Dockerfile
index 7e0e68d..049f3df 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,4 +15,4 @@ COPY ./zadanie1.py ./
 
 RUN chmod +x ./zadanie1.py
 
-CMD python ./zadanie1.py
\ No newline at end of file
+CMD python3 ./zadanie1.py
\ No newline at end of file