diff --git a/static/bb.js b/static/bb.js
index 9f2f526..f4d4517 100644
--- a/static/bb.js
+++ b/static/bb.js
@@ -11,9 +11,9 @@ const BB_INDICATOR = {
     ],
     // Hardcoded internal parameters, no longer exposed to the user.
     internalParams: {
-        bb1_len_upper: 16, bb1_std_upper: 1.9, bb1_len_lower: 17, bb1_std_lower: 1.5,
-        bb2_len_upper: 18, bb2_std_upper: 2.7, bb2_len_lower: 18, bb2_std_lower: 1.6,
-        bb3_len_upper: 16, bb3_std_upper: 2.6, bb3_len_lower: 16, bb3_std_lower: 1.8,
+        bb1_len_upper: 20, bb1_std_upper: 1.6, bb1_len_lower: 20, bb1_std_lower: 1.6,
+        bb2_len_upper: 20, bb2_std_upper: 2.4, bb2_len_lower: 20, bb2_std_lower: 2.4,
+        bb3_len_upper: 20, bb3_std_upper: 3.3, bb3_len_lower: 20, bb3_std_lower: 3.3,
     },
     calculateFull: calculateFullBollingerBands,
 };