diff --git a/README.md b/README.md
index 570296250..6e3080cc7 100755
--- a/README.md
+++ b/README.md
@@ -82,7 +82,6 @@ CyberPanel runs on x86_64 architecture and supports the following operating syst
 - **Ubuntu 24.04.3** - Supported until April 2029 ⭐ **NEW!**
 - **Ubuntu 22.04** - Supported until April 2027
 - **Ubuntu 20.04** - Supported until April 2025
-- **Ubuntu 18.04** - Supported until April 2023
 - **Debian 13** - Supported until 2029 ⭐ **NEW!**
 - **Debian 12** - Supported until 2027
 - **Debian 11** - Supported until 2026
@@ -94,9 +93,7 @@ CyberPanel runs on x86_64 architecture and supports the following operating syst
 - **RHEL 9** - Supported until May 2032
 - **RHEL 8** - Supported until May 2029
 - **CloudLinux 8** - Supported until May 2029
-- **CloudLinux 7** - Supported until June 2024
 - **CentOS 9** - Supported until May 2027
-- **CentOS 8** - Supported until December 2021
 - **CentOS 7** - Supported until June 2024
 - **CentOS Stream 9** - Supported until May 2027
 
@@ -147,7 +144,7 @@ sh <(curl https://raw.githubusercontent.com/usmannasir/cyberpanel/stable/preUpgr
 ### **Bandwidth Reset Issue Fixed** (September 2025)
 
 - **Enhancement**: Implemented automatic monthly bandwidth reset for all websites and child domains
-- **Coverage**: All supported operating systems (Ubuntu, AlmaLinux, RockyLinux, RHEL, CloudLinux, CentOS)
+- **Coverage**: All supported operating systems (Ubuntu 20.04+, AlmaLinux, RockyLinux, RHEL, CloudLinux 8, CentOS 7/9)
 - **Status**: ✅ Automatic monthly reset now functional
 
 ### **New Operating System Support Added** (September 2025)
diff --git a/install.sh b/install.sh
index 3ae942f74..59df29a18 100644
--- a/install.sh
+++ b/install.sh
@@ -6,11 +6,6 @@ if  echo $OUTPUT | grep -q "CentOS Linux 7" ; then
 yum install curl wget -y 1> /dev/null
 yum update curl wget ca-certificates -y 1> /dev/null
                 SERVER_OS="CentOS"
-elif echo $OUTPUT | grep -q "CentOS Linux 8" ; then
-        echo -e "\nDetecting Centos 8...\n"
-        SERVER_OS="CentOS8"
-yum install curl wget -y 1> /dev/null
-yum update curl wget ca-certificates -y 1> /dev/null
 elif echo $OUTPUT | grep -q "CentOS Stream 9" ; then
         echo -e "\nDetecting Centos Stream 9...\n"
         SERVER_OS="CentOSStream9"
@@ -31,19 +26,11 @@ elif echo $OUTPUT | grep -q "AlmaLinux 10" ; then
         SERVER_OS="CentOS8"
 yum install curl wget -y 1> /dev/null
 yum update curl wget ca-certificates -y 1> /dev/null
-elif echo $OUTPUT | grep -q "CloudLinux 7" ; then
-        echo "Checking and installing curl and wget"
-yum install curl wget -y 1> /dev/null
-yum update curl wget ca-certificates -y 1> /dev/null
-                SERVER_OS="CloudLinux"
 elif echo $OUTPUT | grep -q "CloudLinux 8" ; then
         echo "Checking and installing curl and wget"
 yum install curl wget -y 1> /dev/null
 yum update curl wget ca-certificates -y 1> /dev/null
                 SERVER_OS="CloudLinux"
-elif echo $OUTPUT | grep -q "Ubuntu 18.04" ; then
-apt install -y -qq wget curl
-                SERVER_OS="Ubuntu"
 elif echo $OUTPUT | grep -q "Ubuntu 20.04" ; then
 apt install -y -qq wget curl
                 SERVER_OS="Ubuntu"
@@ -101,13 +88,13 @@ else
 
                 echo -e "\nUnable to detect your OS...\n"
                 echo -e "\nCyberPanel is supported on:\n"
-                echo -e "Ubuntu: 18.04, 20.04, 22.04, 24.04.3\n"
+                echo -e "Ubuntu: 20.04, 22.04, 24.04.3\n"
                 echo -e "Debian: 11, 12, 13\n"
                 echo -e "AlmaLinux: 8, 9, 10\n"
                 echo -e "RockyLinux: 8, 9\n"
                 echo -e "RHEL: 8, 9\n"
-                echo -e "CentOS: 7, 8, 9, Stream 9\n"
-                echo -e "CloudLinux: 7.x, 8\n"
+                echo -e "CentOS: 7, 9, Stream 9\n"
+                echo -e "CloudLinux: 8\n"
                 echo -e "openEuler: 20.03, 22.03\n"
                 exit 1
 fi