diff --git a/.circleci/config.yml b/.circleci/config.yml
index c555e8613a..96e53573d6 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -8,7 +8,7 @@ env: &env
   environment:
     GRUNTWORK_INSTALLER_VERSION: v0.0.39
     MODULE_CI_VERSION: v0.57.0
-    OPENTOFU_VERSION: "1.8.8"
+    OPENTOFU_VERSION: "1.9.0"
     TERRAFORM_VERSION: "1.9.7"
     TFLINT_VERSION: "0.47.0"
     TOFU_ENGINE_VERSION: "v0.0.11"
diff --git a/docs/_docs/04_reference/supported-versions.md b/docs/_docs/04_reference/supported-versions.md
index 487ca449a6..b8d22342bf 100644
--- a/docs/_docs/04_reference/supported-versions.md
+++ b/docs/_docs/04_reference/supported-versions.md
@@ -16,6 +16,7 @@ The officially supported versions are:
 
 | OpenTofu Version | Terragrunt Version                                                           |
 |------------------|------------------------------------------------------------------------------|
+| 1.9.x            | >= [0.72.0](https://github.com/gruntwork-io/terragrunt/releases/tag/v0.72.0) |
 | 1.8.x            | >= [0.66.0](https://github.com/gruntwork-io/terragrunt/releases/tag/v0.66.0) |
 | 1.7.x            | >= [0.58.0](https://github.com/gruntwork-io/terragrunt/releases/tag/v0.58.0) |
 | 1.6.x            | >= [0.52.0](https://github.com/gruntwork-io/terragrunt/releases/tag/v0.52.0) |