diff --git a/hosts/plover/.terraform.lock.hcl b/hosts/plover/.terraform.lock.hcl
index 8bdc3050..e3153cc7 100644
--- a/hosts/plover/.terraform.lock.hcl
+++ b/hosts/plover/.terraform.lock.hcl
@@ -1,7 +1,7 @@
-# This file is maintained automatically by "terraform init".
+# This file is maintained automatically by "tofu init".
 # Manual edits may be lost in future updates.
 
-provider "registry.terraform.io/hetznercloud/hcloud" {
+provider "registry.opentofu.org/hetznercloud/hcloud" {
   version     = "1.40.0"
   constraints = "1.40.0"
   hashes = [
diff --git a/shell.nix b/shell.nix
index dcefa014..86450043 100644
--- a/shell.nix
+++ b/shell.nix
@@ -9,7 +9,7 @@ pkgs.mkShell {
     sops
 
     bind
-    terraform
+    opentofu
 
     jq
     wl-clipboard
diff --git a/shells/cloud.nix b/shells/cloud.nix
index 876f6fd9..63608a54 100644
--- a/shells/cloud.nix
+++ b/shells/cloud.nix
@@ -29,6 +29,6 @@
     # It's here since Google Cloud SDK needs it.
     python3
 
-    terraform # The declarative thingy for cloud.
+    opentofu # The declarative thingy for cloud.
   ]);
 }).env