diff --git a/sources/build.pkr.hcl b/sources/build.pkr.hcl
index 78d6dbf..653f54f 100644
--- a/sources/build.pkr.hcl
+++ b/sources/build.pkr.hcl
@@ -2,18 +2,14 @@ packer {
   required_plugins {
     qemu = {
       source  = "github.com/hashicorp/qemu"
-      version = "~> 1"
-    }
-    ansible = {
-      source  = "github.com/hashicorp/ansible"
-      version = "~> 1"
+      version = "= 1.0.10"
     }
     vagrant = {
       source  = "github.com/hashicorp/vagrant"
       version = "= 1.1.1"
     }
     vmware = {
-      version = ">= 1.0"
+      version = "= 1.0.11"
       source  = "github.com/hashicorp/vmware"
     }
     hyperv = {
@@ -22,7 +18,7 @@ packer {
     }
     virtualbox = {
       source  = "github.com/hashicorp/virtualbox"
-      version = "~> 1"
+      version = "= 1.0.5"
     }
   }
 }