diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0dcb80f..0d245eb 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -4,7 +4,7 @@ jobs:
     - auth:
         password: $DOCKER_PASSWORD
         username: $DOCKER_USERNAME
-      image: trussworks/circleci:29ab89fdada1f85c5d8fb685a2c71660f0c5f60c
+      image: trussworks/circleci:efb1042e31538677779971798e0912390f699e72
     steps:
     - checkout
     - restore_cache:
@@ -17,8 +17,7 @@ jobs:
         key: pre-commit-dot-cache-{{ checksum ".pre-commit-config.yaml" }}
         paths:
         - ~/.cache/pre-commit
-references:
-  circleci: trussworks/circleci:29ab89fdada1f85c5d8fb685a2c71660f0c5f60c
+
 version: 2.1
 workflows:
   validate:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0f597cc..03b6fc8 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: git://github.com/pre-commit/pre-commit-hooks
-    rev: v3.2.0
+    rev: v3.4.0
     hooks:
       - id: check-json
       - id: check-merge-conflict
@@ -12,12 +12,12 @@ repos:
       - id: trailing-whitespace
 
   - repo: git://github.com/igorshubovych/markdownlint-cli
-    rev: v0.23.2
+    rev: v0.26.0
     hooks:
       - id: markdownlint
 
   - repo: git://github.com/antonbabenko/pre-commit-terraform
-    rev: v1.37.0
+    rev: v1.45.0
     hooks:
       - id: terraform_docs
       - id: terraform_fmt
diff --git a/README.md b/README.md
index 9655a78..74af718 100644
--- a/README.md
+++ b/README.md
@@ -36,12 +36,10 @@ Creates the following resources for anti-virus scanning:
 
 ## Terraform Versions
 
-Terraform 0.13. Pin module version to `~> 3.X`. Submit pull-requests to `master` branch.
+Terraform 0.13 and newer. Pin module version to `~> 3.X`. Submit pull-requests to `master` branch.
 
 Terraform 0.12. Pin module version to `~> 2.X`. Submit pull-requests to `terraform012` branch.
 
-Terraform 0.11. Pin module version to `~> 1.1.1`. Submit pull-requests to `terraform011` branch.
-
 ## Usage
 
 ```hcl
@@ -77,14 +75,14 @@ module "s3_anti_virus" {
 
 | Name | Version |
 |------|---------|
-| terraform | ~> 0.13.0 |
-| aws | ~> 3.0 |
+| terraform | >= 0.13.0 |
+| aws | >= 3.0 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
-| aws | ~> 3.0 |
+| aws | >= 3.0 |
 
 ## Inputs
 
diff --git a/versions.tf b/versions.tf
index 071bde9..9fdbc79 100644
--- a/versions.tf
+++ b/versions.tf
@@ -1,7 +1,7 @@
 terraform {
-  required_version = "~> 0.13.0"
+  required_version = ">= 0.13.0"
 
   required_providers {
-    aws = "~> 3.0"
+    aws = ">= 3.0"
   }
 }