diff --git a/docs/implplan/SPRINT_20260104_001_BE_determinism_timeprovider_injection.md b/docs/implplan/SPRINT_20260104_001_BE_determinism_timeprovider_injection.md
index 73365a4d7..ee28e0482 100644
--- a/docs/implplan/SPRINT_20260104_001_BE_determinism_timeprovider_injection.md
+++ b/docs/implplan/SPRINT_20260104_001_BE_determinism_timeprovider_injection.md
@@ -69,7 +69,7 @@
 | 13 | DET-013 | TODO | DET-002, DET-003 | Guild | Refactor Signer module (~89 matches remaining) |
 | 14 | DET-014 | DONE | DET-002, DET-003 | Guild | Refactor Unknowns module (skipped - no determinism issues found) |
 | 15 | DET-015 | TODO | DET-002, DET-003 | Guild | Refactor VexLens module (~76 matches remaining) |
-| 16 | DET-016 | TODO | DET-002, DET-003 | Guild | Refactor VulnExplorer module (3 matches remaining) |
+| 16 | DET-016 | DONE | DET-002, DET-003 | Guild | Refactor VulnExplorer module (1 file: VexDecisionStore) |
 | 17 | DET-017 | TODO | DET-002, DET-003 | Guild | Refactor Zastava module (~48 matches remaining) |
 | 18 | DET-018 | TODO | DET-004 to DET-017 | Guild | Final audit: verify zero direct DateTime/Guid/Random calls in production code |