diff --git a/README.md b/README.md
index fa7185f..0f9005e 100644
--- a/README.md
+++ b/README.md
@@ -34,14 +34,25 @@ Commands:
 
 ## install
 
-Clone the repo, then install with pip from it :
+The check requers python3. Using a virtual env is advised for testing :
 
 ```
-pip install .
-pip install .[dev]
-pip install .[test]
+pip -m venv ~/venv
+source ~venv/bin/activate
 ```
 
+Clone the repo, then install with pip3 from it :
+
+```
+pip3 install .
+pip3 install .[dev]
+pip3 install .[test]
+```
+
+Links : 
+* [pip & centos 7](https://linuxize.com/post/how-to-install-pip-on-centos-7/)
+* [pip & debian10](https://linuxize.com/post/how-to-install-pip-on-debian-10/)
+
 ## config file
 
 All global and service specific parameters can be specified via a config file has follows:
diff --git a/doc/make_readme.sh b/doc/make_readme.sh
index 9582bdd..c1c5d88 100755
--- a/doc/make_readme.sh
+++ b/doc/make_readme.sh
@@ -20,14 +20,25 @@ helpme
 cat << '_EOF_' >> $README
 ## install
 
-Clone the repo, then install with pip from it :
+The check requers python3. Using a virtual env is advised for testing :
 
 ```
-pip install .
-pip install .[dev]
-pip install .[test]
+pip -m venv ~/venv
+source ~venv/bin/activate
 ```
 
+Clone the repo, then install with pip3 from it :
+
+```
+pip3 install .
+pip3 install .[dev]
+pip3 install .[test]
+```
+
+Links : 
+* [pip & centos 7](https://linuxize.com/post/how-to-install-pip-on-centos-7/)
+* [pip & debian10](https://linuxize.com/post/how-to-install-pip-on-debian-10/)
+
 ## config file
 
 All global and service specific parameters can be specified via a config file has follows:
diff --git a/setup.py b/setup.py
index ee3079b..24317ec 100644
--- a/setup.py
+++ b/setup.py
@@ -38,6 +38,7 @@ setup(
     keywords="patroni nagios check",
     python_requires=">=3.6",
     install_requires=[
+        "wheel",
         "attrs >= 17, !=21.1",
         "urllib3 >= 1.26.6",
         "nagiosplugin >= 1.3.2",