diff --git a/examples/efk/.tf-control b/examples/efk/.tf-control
index 2420f8d..280f449 100644
--- a/examples/efk/.tf-control
+++ b/examples/efk/.tf-control
@@ -1,4 +1,20 @@
+# .tf-control
+# allows for setting a specific command to be used for tf-* commands under this git repo
+# see tf-control.sh help for more info
+
+TFCONTROL_VERSION="1.0.5"
+
 TFCOMMAND="terraform_latest"
+# TF_CLI_CONFIG_FILE=PATH-TO-FILE/.tf-control.tfrc
+# TFARGS=""
+# TFNOLOG=""
+# TFNOCOLOR=""
+
+# use the following to force a specific version.  An upgrade of an existing 0.12.31 to 1.x
+# needs you to cycle through 0.13.17, 0.14.11, and then latest (0.15.5 not needed).  Other
+# steps in between.  See https://github.e.it.census.gov/terraform/support/tree/master/docs/how-to/terraform-upgrade for details
+#
+#TFCOMMAND="terraform_0.12.31"
 #TFCOMMAND="terraform_0.13.7"
 #TFCOMMAND="terraform_0.14.11"
-#TF_CLI_CONFIG_FILE=.tf-control.tfrc
+#TFCOMMAND="terraform_0.15.5"
diff --git a/examples/efk/.tf-control.tfrc b/examples/efk/.tf-control.tfrc
index d4b0b15..7425488 100644
--- a/examples/efk/.tf-control.tfrc
+++ b/examples/efk/.tf-control.tfrc
@@ -1,5 +1,6 @@
-# https://www.terraform.io/docs/cli/config/config-file.html
+TFCONTROL_VERSION="1.0.5"
 
+# https://www.terraform.io/docs/cli/config/config-file.html
 plugin_cache_dir   = "/data/terraform/terraform.d/plugin-cache"
 #disable_checkpoint = true
 
diff --git a/examples/efk/versions.tf b/examples/efk/versions.tf
index 931b5db..78e837b 100644
--- a/examples/efk/versions.tf
+++ b/examples/efk/versions.tf
@@ -1,16 +1,20 @@
 terraform {
   required_providers {
     aws = {
-      source = "hashicorp/aws"
+      source  = "hashicorp/aws"
+      version = ">= 3.0"
+    }
+    null = {
+      source  = "hashicorp/null"
+      version = ">= 1.0"
     }
     helm = {
-      source = "hashicorp/helm"
+      source  = "hashicorp/helm"
+      version = ">= 1.0"
     }
     kubernetes = {
-      source = "hashicorp/kubernetes"
-    }
-    null = {
-      source = "hashicorp/null"
+      source  = "hashicorp/kubernetes"
+      version = ">= 1.0"
     }
   }
   required_version = ">= 0.13"