diff --git a/scripts/coverage/diff.mjs b/scripts/coverage/diff.mjs
index 3145bcb..b50e0b6 100644
--- a/scripts/coverage/diff.mjs
+++ b/scripts/coverage/diff.mjs
@@ -47,6 +47,7 @@ const ALLOWED_GLOBS = [
   /\.ya?ml$/,
   /\.gitignore$/,
   /\.npmrc$/,
+  /(^|\/)\.env(\.[^/]+)?$/, // .env, .env.example, .env.local, etc.
   // Shell scripts (not Vitest-covered)
   /\.sh$/,
   /\.bash$/,
diff --git a/scripts/coverage/diff.test.mjs b/scripts/coverage/diff.test.mjs
index 5aa9626..e9ffdf4 100644
--- a/scripts/coverage/diff.test.mjs
+++ b/scripts/coverage/diff.test.mjs
@@ -154,6 +154,19 @@ describe("computeDiffCoverage", () => {
     assert.equal(result.summary.filesChanged, 4);
   });
 
+  test("skips .env template files (.env, .env.example, .env.local)", () => {
+    const lcov = parseLcov(lcovText);
+    const diff = new Map([
+      [".env.example", new Set([1, 2, 3])],
+      [".env.local", new Set([1])],
+      [".env", new Set([1])],
+    ]);
+    const result = computeDiffCoverage(diff, lcov);
+    assert.equal(result.status, "pass");
+    assert.equal(result.summary.filesGated, 0);
+    assert.equal(result.summary.filesChanged, 3);
+  });
+
   test("end-to-end fixture: mixed pass/fail/skip/no-data", () => {
     const lcov = parseLcov(lcovText);
     const diff = parseGitDiff(diffText);