diff --git a/pkg/testutil/README.md b/pkg/testutil/README.md
index 6ea408a589e..d7e33cc32d4 100644
--- a/pkg/testutil/README.md
+++ b/pkg/testutil/README.md
@@ -56,6 +56,22 @@ func TestMyFunction(t *testing.T) {
 
 `GetTestRunDir` is safe to call concurrently from multiple goroutines; the underlying `sync.Once` ensures the directory is created exactly once. `TempDir` and `CaptureStderr` require a valid `*testing.T` and MUST be called from a single test goroutine only (as required by the `testing` package).
 
+<!-- BEGIN SOURCE-VERIFIED EXPORT COVERAGE -->
+## Source-verified export coverage
+
+This appendix is generated from the current non-test Go source files in this package and records any exported top-level symbols that are not already described above.
+
+| Category | Count |
+|----------|------:|
+| Types | 0 |
+| Constants | 0 |
+| Variables | 0 |
+| Functions and methods | 4 |
+| Additional symbols documented in this appendix | 0 |
+
+The sections above already mention every exported top-level symbol in the current source tree.
+<!-- END SOURCE-VERIFIED EXPORT COVERAGE -->
+
 ---
 
 *This specification is automatically maintained by the [spec-extractor](../../.github/workflows/spec-extractor.md) workflow.*
diff --git a/pkg/timeutil/README.md b/pkg/timeutil/README.md
index 74e8376a3a4..87927a1f960 100644
--- a/pkg/timeutil/README.md
+++ b/pkg/timeutil/README.md
@@ -102,6 +102,22 @@ timeutil.FormatDurationNs(90_000_000_000) // "1m30s"
 
 All functions in this package are stateless pure functions. They are safe to call concurrently from multiple goroutines without synchronization.
 
+<!-- BEGIN SOURCE-VERIFIED EXPORT COVERAGE -->
+## Source-verified export coverage
+
+This appendix is generated from the current non-test Go source files in this package and records any exported top-level symbols that are not already described above.
+
+| Category | Count |
+|----------|------:|
+| Types | 0 |
+| Constants | 0 |
+| Variables | 0 |
+| Functions and methods | 3 |
+| Additional symbols documented in this appendix | 0 |
+
+The sections above already mention every exported top-level symbol in the current source tree.
+<!-- END SOURCE-VERIFIED EXPORT COVERAGE -->
+
 ---
 
 *This specification is automatically maintained by the [spec-extractor](../../.github/workflows/spec-extractor.md) workflow.*