diff --git a/.github/workflows/bump-homebrew.yml b/.github/workflows/bump-homebrew.yml
index def09d1..d6af5c5 100644
--- a/.github/workflows/bump-homebrew.yml
+++ b/.github/workflows/bump-homebrew.yml
@@ -12,6 +12,11 @@ on:
         description: "Version to bump to."
         required: true
         type: string
+      dry_run:
+        description: "Validate the bump without opening a tap PR."
+        required: false
+        default: false
+        type: boolean
     secrets:
       TAP_BOT_APP_ID:
         required: true
@@ -24,6 +29,11 @@ on:
         description: "Version to bump to (e.g. 0.40.0). Defaults to latest on PyPI."
         required: false
         type: string
+      dry_run:
+        description: "Validate the bump without opening a tap PR."
+        required: false
+        default: false
+        type: boolean
 
 permissions:
   contents: read
@@ -119,7 +129,6 @@ jobs:
 
       - name: Update url + sha256 and regenerate resources
         env:
-          HOMEBREW_NO_INSTALL_FROM_API: "1"
           HOMEBREW_NO_REQUIRE_TAP_TRUST: "1"
           SDIST_URL: ${{ steps.sdist.outputs.url }}
           SDIST_SHA: ${{ steps.sdist.outputs.sha256 }}
@@ -174,7 +183,6 @@ jobs:
 
       - name: Validate the formula
         env:
-          HOMEBREW_NO_INSTALL_FROM_API: "1"
           HOMEBREW_NO_REQUIRE_TAP_TRUST: "1"
         run: |
           set -euo pipefail
@@ -182,6 +190,7 @@ jobs:
           brew audit --formula "${FORMULA}"
 
       - name: Open the bump PR
+        if: ${{ !inputs.dry_run }}
         env:
           GH_TOKEN: ${{ steps.app-token.outputs.token }}
           VERSION: ${{ steps.ver.outputs.version }}
diff --git a/tests/test_release_artifacts.py b/tests/test_release_artifacts.py
index 5bee45c..66e4005 100644
--- a/tests/test_release_artifacts.py
+++ b/tests/test_release_artifacts.py
@@ -191,6 +191,7 @@ def test_workflows_separate_automatic_preparation_from_manual_deployment() -> No
     repository = Path(__file__).resolve().parents[1]
     ci = (repository / ".github/workflows/ci.yml").read_text(encoding="utf-8")
     release = (repository / ".github/workflows/release.yml").read_text(encoding="utf-8")
+    homebrew = (repository / ".github/workflows/bump-homebrew.yml").read_text(encoding="utf-8")
 
     prepare = _workflow_job(ci, "prepare-release")
     draft = _workflow_job(ci, "create-draft-release")
@@ -298,6 +299,12 @@ def test_workflows_separate_automatic_preparation_from_manual_deployment() -> No
     assert release.count("actions/upload-artifact@v7") == 1
     assert release.count("actions/download-artifact@v7") == 2
 
+    assert homebrew.count("type: boolean") == 2
+    assert 'description: "Validate the bump without opening a tap PR."' in homebrew
+    assert "HOMEBREW_NO_INSTALL_FROM_API" not in homebrew
+    assert "if: ${{ !inputs.dry_run }}" in homebrew
+    assert "brew update-python-resources" in homebrew
+
     assert "pypa/gh-action-pypi-publish@dc37677b2e1c63e2034f94d8a5b11f265b73ba33" in pypi
     assert "pypa/gh-action-pypi-publish@release/v1" not in pypi
     assert "secrets.PYPI_API_TOKEN" in pypi