diff --git a/.github/workflows/wc-create-pr-branch.yaml b/.github/workflows/wc-create-pr-branch.yaml
index e8a0ed266..2e124f786 100644
--- a/.github/workflows/wc-create-pr-branch.yaml
+++ b/.github/workflows/wc-create-pr-branch.yaml
@@ -191,6 +191,18 @@ jobs:
           TFACTION_WORKING_DIR: setup/test/foo
           TFACTION_JOB_TYPE: terraform
 
+      - name: Test OpenTofu (setup)
+        uses: ./setup
+        with:
+          github_token: ${{steps.token.outputs.token}}
+        if: |
+          ! github.event.pull_request.head.repo.fork
+        env:
+          TFACTION_CONFIG: setup/test/opentofu/tfaction-root.yaml
+          TFACTION_TARGET: setup/test/opentofu/foo
+          TFACTION_WORKING_DIR: setup/test/opentofu/foo
+          TFACTION_JOB_TYPE: terraform
+
       - name: Test test
         uses: ./test
         with:
diff --git a/aqua-checksums.json b/aqua-checksums.json
index 654bfabaa..df846b245 100644
--- a/aqua-checksums.json
+++ b/aqua-checksums.json
@@ -60,6 +60,31 @@
       "checksum": "6E4C6ACD38DE7B4B1BA8F8082B9E688DF8C9B861D3F8B2E7BB1B7270201A3587",
       "algorithm": "sha256"
     },
+    {
+      "id": "github_release/github.com/opentofu/opentofu/v1.8.7/tofu_1.8.7_darwin_amd64.zip",
+      "checksum": "7FF1307EC5DD14B2660EC91B39354CEC24AA492A03338D8A37FB542FB0B031F7",
+      "algorithm": "sha256"
+    },
+    {
+      "id": "github_release/github.com/opentofu/opentofu/v1.8.7/tofu_1.8.7_darwin_arm64.zip",
+      "checksum": "FEC8D934B9F69E033154265B60677604777505D3634945B3043C46E0030B5E5D",
+      "algorithm": "sha256"
+    },
+    {
+      "id": "github_release/github.com/opentofu/opentofu/v1.8.7/tofu_1.8.7_linux_amd64.zip",
+      "checksum": "6935F082EF120FDB05F608DDE61ACE6B82D134496634586F42C8E38856B3E411",
+      "algorithm": "sha256"
+    },
+    {
+      "id": "github_release/github.com/opentofu/opentofu/v1.8.7/tofu_1.8.7_linux_arm64.zip",
+      "checksum": "5CE3686C20C9D639E99A064AF5CF0D781361B0874426B2343A9AB4E33D25DB4F",
+      "algorithm": "sha256"
+    },
+    {
+      "id": "github_release/github.com/opentofu/opentofu/v1.8.7/tofu_1.8.7_windows_amd64.zip",
+      "checksum": "C63B55B322CA292491D8151CF24F43BA64F3522F896F13B16A49477A362580DF",
+      "algorithm": "sha256"
+    },
     {
       "id": "github_release/github.com/reviewdog/reviewdog/v0.20.3/reviewdog_0.20.3_Darwin_arm64.tar.gz",
       "checksum": "A7FBF41913CE5B6F1872D10C136139B7A849190F4F1F0DC1ED4BF74C636F22A2",
@@ -291,8 +316,8 @@
       "algorithm": "sha256"
     },
     {
-      "id": "registries/github_content/github.com/aquaproj/aqua-registry/v4.280.0/registry.yaml",
-      "checksum": "6B5BB3DBC8AE412B5EF31232D06FBD81215E6431270FA7BAD4AAF0BC167C0A82",
+      "id": "registries/github_content/github.com/aquaproj/aqua-registry/v4.282.0/registry.yaml",
+      "checksum": "58657FD69E9B7557F828DC0DF30134AE2D8E2111D3FA9347A376E14B9A7DE463",
       "algorithm": "sha256"
     }
   ]
diff --git a/aqua/opentofu.yaml b/aqua/opentofu.yaml
new file mode 100644
index 000000000..f734201df
--- /dev/null
+++ b/aqua/opentofu.yaml
@@ -0,0 +1,2 @@
+packages:
+  - name: opentofu/opentofu@v1.8.7
diff --git a/setup/test/opentofu/foo/.terraform.lock.hcl b/setup/test/opentofu/foo/.terraform.lock.hcl
new file mode 100644
index 000000000..309a9e0dc
--- /dev/null
+++ b/setup/test/opentofu/foo/.terraform.lock.hcl
@@ -0,0 +1,22 @@
+# This file is maintained automatically by "tofu init".
+# Manual edits may be lost in future updates.
+
+provider "registry.opentofu.org/hashicorp/null" {
+  version     = "3.2.3"
+  constraints = "3.2.3"
+  hashes = [
+    "h1:LF8arSzHfhbyQSFtTMTYEqCM34klzrbAQBJMHYCs9d8=",
+    "h1:ZD7F/BQPzRy/smJgSwnDs0vrqstk71sx2p0qtUcc/iU=",
+    "h1:nNa5j1vTtxcpdC2i61O2tRkZjdkBNsxzYXYIx0VNsjc=",
+    "zh:1d57d25084effd3fdfd902eca00020b34b1fb020253b84d7dd471301606015ac",
+    "zh:65b7f9799b88464d9c2ec529713b7f52ea744275b61a8dc86cdedab1b2dcb933",
+    "zh:80d3e9c95b7b4ae7c54005cd127cae82e5c53d2b7023ef24c147337bac9dadd9",
+    "zh:841b60c07683e4bf456799ccd718896fdafdcc2c49252ae09967f2e74d8c8a03",
+    "zh:8fa1c592a9c78222e35713c6edb3f1f818a4c6f3524a30a209f0a7e919827b68",
+    "zh:bb795cc1429e09466840c09d39a28edf1db5070b1ec76822fc1173906a264572",
+    "zh:da1784818a89bea29dfe660632f0060a7a843e4e564d74435fbeca002b0f7d2a",
+    "zh:f409bf21b1cdaa6dac47cd79806f3d93f67e9507fe4dbf33b0165335f53bc2e1",
+    "zh:fbea7a1ff84b430ba9594698e93196d81d03e4036de3d1cafccb2a96d5b38581",
+    "zh:fbf0c84663a7e85881388d7d71ac862184f05fbf2d17ecf76bc5d3d7503ea260",
+  ]
+}
diff --git a/setup/test/opentofu/foo/main.tf b/setup/test/opentofu/foo/main.tf
new file mode 100644
index 000000000..3911a2a9b
--- /dev/null
+++ b/setup/test/opentofu/foo/main.tf
@@ -0,0 +1 @@
+resource "null_resource" "foo" {}
diff --git a/setup/test/opentofu/foo/providers.tf b/setup/test/opentofu/foo/providers.tf
new file mode 100644
index 000000000..48a57f644
--- /dev/null
+++ b/setup/test/opentofu/foo/providers.tf
@@ -0,0 +1 @@
+provider "null" {}
diff --git a/setup/test/opentofu/foo/terraform.tf b/setup/test/opentofu/foo/terraform.tf
new file mode 100644
index 000000000..b8216cc10
--- /dev/null
+++ b/setup/test/opentofu/foo/terraform.tf
@@ -0,0 +1,9 @@
+terraform {
+  required_version = ">= 1.0"
+  required_providers {
+    null = {
+      source  = "hashicorp/null"
+      version = "3.2.3"
+    }
+  }
+}
diff --git a/setup/test/opentofu/foo/tfaction.yaml b/setup/test/opentofu/foo/tfaction.yaml
new file mode 100644
index 000000000..0967ef424
--- /dev/null
+++ b/setup/test/opentofu/foo/tfaction.yaml
@@ -0,0 +1 @@
+{}
diff --git a/setup/test/opentofu/tfaction-root.yaml b/setup/test/opentofu/tfaction-root.yaml
new file mode 100644
index 000000000..dc7f99de1
--- /dev/null
+++ b/setup/test/opentofu/tfaction-root.yaml
@@ -0,0 +1,61 @@
+---
+plan_workflow_name: test
+
+label_prefixes:
+  tfmigrate: "migrate:"
+skip_terraform_by_renovate: true
+renovate_terraform_labels:
+  - terraform
+providers_lock_opts: -platform=linux_amd64 -platform=darwin_arm64
+tfcmt_plan_patch: true
+# conftest_policy_directory: conftest-policy
+
+# skip_create_pr: true
+
+terraform_command: tofu
+
+conftest:
+  policies:
+    - policy: js/test/conftest/policy
+      tf: true
+
+update_local_path_module_caller:
+  enabled: true
+
+trivy:
+  enabled: true
+tfsec:
+  enabled: false
+tflint:
+  enabled: true
+  fix: true
+
+scaffold_working_directory:
+  skip_adding_aqua_packages: true
+
+# aqua:
+#   update_checksum:
+#     # Update aqua-checksums.json in `setup` action
+#     enabled: true # default is false
+#     skip_push: false # default is false
+#     prune: true # default is false
+
+update_related_pull_requests:
+  enabled: true
+
+drift_detection:
+  enabled: false
+  issue_repo_owner: suzuki-shunsuke
+  issue_repo_name: tfaction
+  minimum_detection_interval: 1
+  num_of_issues: 1
+
+replace:
+  patterns:
+    - regexp: /services/
+      replace: /
+
+target_groups:
+  - working_directory: setup/test/
+    target: setup/test/
+    template_dir: js/test/templates/aws