diff --git a/.github/actions/nix-setup/action.yaml b/.github/actions/nix-setup/action.yaml
index 6de0e03..04b2f0f 100644
--- a/.github/actions/nix-setup/action.yaml
+++ b/.github/actions/nix-setup/action.yaml
@@ -1,6 +1,6 @@
 # Managed by copier — changes may be overwritten by `copier update`
 name: Nix Setup
-description: Install Nix and enable magic-nix-cache
+description: Install Nix with Determinate Systems installer
 
 inputs:
   nix-extra-conf:
@@ -17,6 +17,3 @@ runs:
           eval-cores = 1
           ${{ inputs.nix-extra-conf }}
         diagnostic-endpoint: ""
-    - uses: DeterminateSystems/magic-nix-cache-action@565684385bcd71bad329742eefe8d12f2e765b39 # v13
-      with:
-        diagnostic-endpoint: ""
diff --git a/.github/renovate.json b/.github/renovate.json
index 6881547..bcea55c 100644
--- a/.github/renovate.json
+++ b/.github/renovate.json
@@ -32,11 +32,6 @@
       "matchUpdateTypes": ["major"],
       "groupName": "major dependencies",
       "groupSlug": "major"
-    },
-    {
-      "matchManagers": ["github-actions"],
-      "matchFileNames": ["template/**"],
-      "enabled": false
     }
   ]
 }
diff --git a/template/.github/actions/nix-setup/action.yaml b/template/.github/actions/nix-setup/action.yaml
index 6de0e03..04b2f0f 100644
--- a/template/.github/actions/nix-setup/action.yaml
+++ b/template/.github/actions/nix-setup/action.yaml
@@ -1,6 +1,6 @@
 # Managed by copier — changes may be overwritten by `copier update`
 name: Nix Setup
-description: Install Nix and enable magic-nix-cache
+description: Install Nix with Determinate Systems installer
 
 inputs:
   nix-extra-conf:
@@ -17,6 +17,3 @@ runs:
           eval-cores = 1
           ${{ inputs.nix-extra-conf }}
         diagnostic-endpoint: ""
-    - uses: DeterminateSystems/magic-nix-cache-action@565684385bcd71bad329742eefe8d12f2e765b39 # v13
-      with:
-        diagnostic-endpoint: ""
diff --git a/template/.github/renovate.json.jinja b/template/.github/renovate.json.jinja
index 5a803f9..8b28302 100644
--- a/template/.github/renovate.json.jinja
+++ b/template/.github/renovate.json.jinja
@@ -19,13 +19,6 @@
       "matchUpdateTypes": ["major"],
       "groupName": "major dependencies",
       "groupSlug": "major"
-    }{{ ',' if _is_template else '' }}
-{% if _is_template %}
-    {
-      "matchManagers": ["github-actions"],
-      "matchFileNames": ["template/**"],
-      "enabled": false
     }
-{% endif %}
   ]
 }
diff --git a/tests/test_rendering.py b/tests/test_rendering.py
index a6962e6..11bcb06 100644
--- a/tests/test_rendering.py
+++ b/tests/test_rendering.py
@@ -287,16 +287,6 @@ def test_renovate_has_template_config(generated_template_project):
     assert template_managers, "No template-specific customManagers found"
 
 
-def test_renovate_template_suppresses_builtin_gha(generated_template_project):
-    """Template repo disables built-in github-actions manager for template paths."""
-    data = parse_json(generated_template_project / ".github" / "renovate.json")
-    rules = data.get("packageRules", [])
-    gha_rule = [r for r in rules if r.get("matchManagers") == ["github-actions"]]
-    assert gha_rule, "No packageRule suppressing github-actions for template paths"
-    assert gha_rule[0].get("matchFileNames") == ["template/**"]
-    assert gha_rule[0].get("enabled") is False
-
-
 def test_no_consistency_job_default(generated_github_project):
     """Default projects have no consistency job in pr-checks."""
     assert "consistency" not in (generated_github_project / ".github" / "workflows" / "pr-checks.yaml").read_text()