diff --git a/README.md b/README.md
index e50ac1ab..86a8c6e1 100644
--- a/README.md
+++ b/README.md
@@ -876,7 +876,6 @@ Examples of using `setup-php` with various PHP Frameworks and Packages.
 
 - [Node.js dependencies](https://github.com/shivammathur/setup-php/network/dependencies "Node.js dependencies")
 - [aaronparker/VcRedist](https://github.com/aaronparker/VcRedist "VcRedist PowerShell package")
-- [gplessis/dotdeb-php](https://github.com/gplessis/dotdeb-php "Packaging for end of life PHP versions")
 - [mlocati/powershell-phpmanager](https://github.com/mlocati/powershell-phpmanager "Package to handle PHP on windows")
 - [ppa:ondrej/php](https://launchpad.net/~ondrej/+archive/ubuntu/php "Packaging active PHP packages")
 - [shivammathur/cache-extensions](https://github.com/shivammathur/cache-extensions "GitHub action to help with caching PHP extensions")
diff --git a/src/scripts/linux.sh b/src/scripts/linux.sh
index 073c824c..7f981e80 100644
--- a/src/scripts/linux.sh
+++ b/src/scripts/linux.sh
@@ -13,7 +13,6 @@ cleanup_lists() {
     sudo mv /etc/apt/sources.list.d /etc/apt/sources.list.d.save
     sudo mkdir /etc/apt/sources.list.d
     sudo mv /etc/apt/sources.list.d.save/*ondrej*.list /etc/apt/sources.list.d/
-    sudo mv /etc/apt/sources.list.d.save/*dotdeb*.list /etc/apt/sources.list.d/ 2>/dev/null || true
     trap "sudo mv /etc/apt/sources.list.d.save/*.list /etc/apt/sources.list.d/ 2>/dev/null" exit
   fi
 }
@@ -117,9 +116,7 @@ add_extension() {
   if check_extension "$extension"; then
     add_log "${tick:?}" "$extension" "Enabled"
   else
-    if [[ "$version" =~ 5.[4-5] ]]; then
-      install_packages "php5-$extension=$release_version"
-    elif [[ "$version" =~ ${nightly_versions:?} ]]; then
+    if [[ "$version" =~ ${nightly_versions:?} ]]; then
       pecl_install "$extension"
     else
       install_packages "php$version-$extension" || pecl_install "$extension"
@@ -169,7 +166,6 @@ setup_nightly() {
 # Function to setup PHP 5.3, PHP 5.4 and PHP 5.5.
 setup_old_versions() {
   run_script "php5-ubuntu" "$version"
-  release_version=$(php -v | head -n 1 | cut -d' ' -f 2)
 }
 
 # Function to add PECL.