diff --git a/README.md b/README.md
index 3cd5558..6637cc5 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ Form input parameters for configuring a bundle for deployment.
 
 - **`fargate`** *(object)*: AWS Fargate provides on-demand, right-sized compute capacity for running containers on EKS without managing node pools or clusters of EC2 instances.
   - **`enabled`** *(boolean)*: Enables EKS Fargate. Default: `False`.
-- **`k8s_version`** *(string)*: The version of Kubernetes to run. **WARNING: Upgrading Kubernetes version must be done one minor version at a time**. For example, upgrading from 1.28 to 1.30 requires upgrading to 1.29 first. Must be one of: `['1.22', '1.23', '1.24', '1.25', '1.26', '1.27', '1.28', '1.29', '1.30']`. Default: `1.30`.
+- **`k8s_version`** *(string)*: The version of Kubernetes to run. **WARNING: Upgrading Kubernetes version must be done one minor version at a time**. For example, upgrading from 1.28 to 1.30 requires upgrading to 1.29 first. Must be one of: `['1.23', '1.24', '1.25', '1.26', '1.27', '1.28', '1.29', '1.30', '1.31']`. Default: `1.31`.
 - **`monitoring`** *(object)*
   - **`control_plane_log_retention`** *(integer)*: Duration to retain control plane logs in AWS Cloudwatch (Note: control plane logs do not contain application or container logs). Default: `7`.
     - **One of**
diff --git a/massdriver.yaml b/massdriver.yaml
index e075dfb..477eea4 100644
--- a/massdriver.yaml
+++ b/massdriver.yaml
@@ -7,11 +7,11 @@ type: infrastructure
 
 steps:
   - path: src
-    provisioner: terraform
+    provisioner: opentofu
   - path: core-services
-    provisioner: terraform
+    provisioner: opentofu
   - path: custom-resources
-    provisioner: terraform
+    provisioner: opentofu
 
 params:
   examples:
@@ -69,9 +69,8 @@ params:
       type: string
       title: Kubernetes Version
       description: "The version of Kubernetes to run. **WARNING: Upgrading Kubernetes version must be done one minor version at a time**. For example, upgrading from 1.28 to 1.30 requires upgrading to 1.29 first."
-      default: "1.30"
+      default: "1.31"
       enum:
-        - "1.22"
         - "1.23"
         - "1.24"
         - "1.25"
@@ -80,6 +79,7 @@ params:
         - "1.28"
         - "1.29"
         - "1.30"
+        - "1.31"
     fargate:
       type: object
       title: Fargate