diff --git a/.gitignore b/.gitignore
index 0305003..aa725cb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,7 @@ terraform.tfvars
 build/
 */build/
 out/
+
+# Ignore Terraform lock files, as we want to test the Terraform code in these repos with the latest provider
+# versions.
+.terraform.lock.hcl
diff --git a/asg-elb-service/main.tf b/asg-elb-service/main.tf
index 284fe3d..8f32bd8 100644
--- a/asg-elb-service/main.tf
+++ b/asg-elb-service/main.tf
@@ -10,8 +10,8 @@
 
 terraform {
   # Live modules pin exact Terraform version; generic modules let consumers pin the version.
-  # The latest version of Terragrunt (v0.25.1 and above) recommends Terraform 0.13.3 or above.
-  required_version = "= 0.13.3"
+  # The latest version of Terragrunt (v0.27.0 and above) recommends Terraform 0.14.0 or above.
+  required_version = "= 0.14.4"
 
   # Live modules pin exact provider version; generic modules let consumers pin the version.
   required_providers {
diff --git a/mysql/main.tf b/mysql/main.tf
index bb9362e..8f17740 100644
--- a/mysql/main.tf
+++ b/mysql/main.tf
@@ -8,8 +8,8 @@
 
 terraform {
   # Live modules pin exact Terraform version; generic modules let consumers pin the version.
-  # The latest version of Terragrunt (v0.25.1 and above) recommends Terraform 0.13.3 or above.
-  required_version = "= 0.13.3"
+  # The latest version of Terragrunt (v0.27.0 and above) recommends Terraform 0.14.0 or above.
+  required_version = "= 0.14.4"
 
   # Live modules pin exact provider version; generic modules let consumers pin the version.
   required_providers {