diff --git a/nix/validate.nix b/nix/validate.nix
index 579a7af..4159f80 100644
--- a/nix/validate.nix
+++ b/nix/validate.nix
@@ -10,9 +10,7 @@ writeShellApplication {
 	];
 	text = ''
 		shopt -s globstar
-		export PACKER_LOG=1
 		packer init sources
-		unset PACKER_LOG
 		for vars in distros/**/*.pkrvars.hcl; do
 			packer validate -except=upload "-var-file=''${vars}" sources/
 		done
diff --git a/sources/build.pkr.hcl b/sources/build.pkr.hcl
index 653f54f..69dd485 100644
--- a/sources/build.pkr.hcl
+++ b/sources/build.pkr.hcl
@@ -2,11 +2,11 @@ packer {
   required_plugins {
     qemu = {
       source  = "github.com/hashicorp/qemu"
-      version = "= 1.0.10"
+      version = "= 1.1.0"
     }
     vagrant = {
       source  = "github.com/hashicorp/vagrant"
-      version = "= 1.1.1"
+      version = "= 1.1.4"
     }
     vmware = {
       version = "= 1.0.11"