diff --git a/README.md b/README.md
index 0f34d9f..841eb33 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,8 @@ You can open any chapter of the book in Colab by clicking on one of these links:
 If you are running this in basic computer and you are using pip here is what you should do to run this book. 
 For mac or linux
 ```bash 
-os_linux_mac_start
+chmod a+x os_linux_mac_start.sh
+os_linux_mac_start.sh
 ```
 
 For Windows 
diff --git a/os_linux_mac_start.sh b/os_linux_mac_start.sh
old mode 100644
new mode 100755
index 4f11859..aac9d6f
--- a/os_linux_mac_start.sh
+++ b/os_linux_mac_start.sh
@@ -2,7 +2,6 @@ python3 -m venv env
 
 source env/bin/activate
 
-python3 -m pip --upgrade pip 
 
 pip install -r requirements.txt
 
diff --git a/requirements.txt b/requirements.txt
index cf13e70..e5c1963 100644
Binary files a/requirements.txt and b/requirements.txt differ