diff --git a/pyenv/README.md b/pyenv/README.md
index ba2f9e2..22ad954 100644
--- a/pyenv/README.md
+++ b/pyenv/README.md
@@ -25,7 +25,7 @@ sudo apt update
 sudo apt install -y build-essential zlib1g-dev libssl-dev
 
 # recommended
-sudo apt install -y libreadline-dev libbz2-dev libsqlite3-dev
+sudo apt install -y libreadline-dev libbz2-dev libsqlite3-dev libffi-dev
 ```
 
 ## Cheat Sheet
@@ -40,23 +40,23 @@ pre-requisites above).
 Here's how you can check for the latest version:
 
 ```sh
-pyenv install --list | grep -v -- - | tail -n 1
-#>   3.9.1
+pyenv install --list | grep -E '^\s+[0-9.]+$' | tail -n 1
+#>   3.10.7
 ```
 
 And install it:
 
 ```sh
-pyenv install -v 3.9.1
-#> Installed Python-3.9.1 to ~/.pyenv/versions/3.9.1
+pyenv install -v 3.10.7
+#> Installed Python-3.10.7 to ~/.pyenv/versions/3.10.7
 ```
 
 And use it:
 
 ```sh
-pyenv global 3.9.1
+pyenv global 3.10.7
 python --version
-#> Python 3.9.1
+#> Python 3.10.7
 ```
 
 Revert back to your system python:
@@ -72,7 +72,7 @@ pyenv install --list
 ```
 
 ```txt
-  3.9.1
+  3.10.7
   activepython-3.6.0
   anaconda3-2020.11
   graalpython-20.3.0
diff --git a/python/install.sh b/python/install.sh
index 9e423ef..785c8c9 100644
--- a/python/install.sh
+++ b/python/install.sh
@@ -17,8 +17,7 @@ __init_python() {
 
     my_latest_python3="$(
         pyenv install --list |
-            grep -v -- - |
-            grep '3\.[0-9]\+\.[0-9]\+$' |
+            grep -E '^\s+3\.[0-9]+\.[0-9]+$' |
             tail -n 1 |
             cut -d' ' -f3
     )"
diff --git a/python2/install.sh b/python2/install.sh
index 164f374..69420d9 100644
--- a/python2/install.sh
+++ b/python2/install.sh
@@ -17,8 +17,7 @@ __init_python2() {
 
     my_latest_python2="$(
         pyenv install --list |
-            grep -v -- - |
-            grep '2\.[0-9]\+\.[0-9]\+$' |
+            grep -E '^\s+2\.[0-9]+\.[0-9]+$' |
             tail -n 1 |
             cut -d' ' -f3
     )"