diff --git a/.tool-versions b/.tool-versions
index b3d0a19..695449f 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,3 +1,3 @@
 just 1.40.0
 python 3.12.10
-uv 0.8.14
+uv 0.13.4
diff --git a/README.md b/README.md
index ddc68b4..c8aa39a 100644
--- a/README.md
+++ b/README.md
@@ -110,7 +110,7 @@ Set `skip_unchanged: 'false'` to always scan:
 | `sinistral_project` | Yes | — | Sinistral project name to scan against. |
 | `iac_directories` | Yes | — | Path(s) to IaC folders relative to the repo root. Newline-separated. |
 | `recurse` | No | `false` | Recursively discover subdirectories containing `.tf` files. |
-| `sinistral_cli_version` | No | `v0.5.39` | Git ref (tag, branch, SHA) of [sinistral-cli](https://github.com/stacklet/sinistral-cli). |
+| `sinistral_cli_version` | No | `v0.5.39.1` | Git ref (tag, branch, SHA) of [sinistral-cli](https://github.com/stacklet/sinistral-cli). |
 | `post_pr_comment` | No | `true` | Whether to post scan results as a PR comment. |
 | `skip_unchanged` | No | `true` | Skip the scan when no Terraform files under `iac_directories` changed. Fails open. See [Skipping unchanged runs](#skipping-unchanged-runs). |
 
diff --git a/action.yml b/action.yml
index 12e1d0a..4289d86 100644
--- a/action.yml
+++ b/action.yml
@@ -34,7 +34,7 @@ inputs:
     description: >
       sinistral-cli version to use. Accepts any git ref (branch, tag, SHA) from
       https://github.com/stacklet/sinistral-cli.
-    default: '4f2cf75b8e292e8ff052cf639f363abb1fb76d4c' # v0.5.39
+    default: '68dd15204e440e05f88b761242c4b264efa7038d' # v0.5.39.1
   post_pr_comment:
     required: false
     description: Whether to post scan results as a PR comment.