diff --git a/strategy/generator/confirm/vi.py b/strategy/generator/confirm/vi.py
index 9923c496..e77f7bf8 100644
--- a/strategy/generator/confirm/vi.py
+++ b/strategy/generator/confirm/vi.py
@@ -8,4 +8,4 @@
 class ViConfirm(Confirm):
     type: ConfirmType = ConfirmType.Vi
     atr_period: Parameter = StaticParameter(1.0)
-    period: Parameter = StaticParameter(14.0)
+    period: Parameter = StaticParameter(21.0)
diff --git a/ta_lib/strategies/confirm/src/lib.rs b/ta_lib/strategies/confirm/src/lib.rs
index 9720067d..5b1210e5 100644
--- a/ta_lib/strategies/confirm/src/lib.rs
+++ b/ta_lib/strategies/confirm/src/lib.rs
@@ -7,6 +7,7 @@ mod roc;
 mod rsi_neutrality;
 mod rsi_signalline;
 mod stc;
+mod vi;
 
 pub use cci::CciConfirm;
 pub use dpo::DpoConfirm;
@@ -17,3 +18,4 @@ pub use roc::RocConfirm;
 pub use rsi_neutrality::RsiNeutralityConfirm;
 pub use rsi_signalline::RsiSignalLineConfirm;
 pub use stc::StcConfirm;
+pub use vi::ViConfirm;