diff --git a/README.md b/README.md
index 8556259..fef67d9 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,6 @@ print("Best solution:", result[1], "\nBest solution chromosome:", result[0])
 # Best solution: 0.0 
 # Best solution chromosome: [0.0, 0.0, 0.0, 0.0, 0.0]
 
-# Note that the result could be different because the algorithm includes randomness.
 ```
 
 We have provided a basic example above. If you're interested in exploring more examples, you have two options:
diff --git a/paper/paper.md b/paper/paper.md
index f2de256..c3e6320 100644
--- a/paper/paper.md
+++ b/paper/paper.md
@@ -114,7 +114,6 @@ print("Best solution:", result[1], "\nBest solution chromosome:", result[0])
 # Best solution: 0.0 
 # Best solution chromosome: [0.0, 0.0, 0.0, 0.0, 0.0]
 
-# Note that the result could be different because the algorithm includes randomness.
 ```
 
 
diff --git a/pycellga/optimizer.py b/pycellga/optimizer.py
index 1254aa0..48e29df 100644
--- a/pycellga/optimizer.py
+++ b/pycellga/optimizer.py
@@ -49,7 +49,8 @@
 from typing import Callable, List, Tuple
 from collections.abc import Callable
 
-
+np.random.seed(100)
+random.seed(100)
 
 def cga(
     n_cols: int,