diff --git a/packer/jenkins-agent-win2019-x64.json b/packer/jenkins-agent-win2019-x64.json
index 046dae4a..d528d3ea 100644
--- a/packer/jenkins-agent-win2019-x64.json
+++ b/packer/jenkins-agent-win2019-x64.json
@@ -17,7 +17,7 @@
       "encrypt_boot":"false",
       "region":"{{user `build-region`}}",
       "ami_regions":"{{user `aws_ami_region`}}",
-      "instance_type":"c5.4xlarge",
+      "instance_type":"m5.4xlarge",
       "ami_name":"{{user `name-base`}}-{{user `build-time`}}",
       "vpc_id":"{{user `build-vpc`}}",
       "subnet_id":"{{user `build-subnet`}}",
@@ -68,7 +68,7 @@
     {
       "type":"powershell",
       "inline": [
-        "C:\\Users\\Administrator\\jenkins\\winrm_max_memory.ps1 30"
+        "C:\\Users\\Administrator\\jenkins\\winrm_max_memory.ps1 62"
       ]
     },
     {
diff --git a/packer/scripts/windows/winrm_max_memory.ps1 b/packer/scripts/windows/winrm_max_memory.ps1
index be02dca7..c3387983 100644
--- a/packer/scripts/windows/winrm_max_memory.ps1
+++ b/packer/scripts/windows/winrm_max_memory.ps1
@@ -6,7 +6,7 @@
 # compatible open source license.
 
 echo "The max amount of the winrm memory is not the same on different instance type and might cause the server unresponsive upon startup"
-echo "The only examples we have now is C54xlarge can have 30/32GB on WINRM, C524large 190/192GB, M58xlarge 110/128GB without failures"
+echo "The only examples we have now is C54xlarge can have 30/32GB on WINRM, C524large 190/192GB, M54xlarge 62/64GB, M58xlarge 110/128GB without failures"
 
 $memorygb = [int]$args[0]
 $memorygb