diff --git a/share-through/CHANGES.md b/share-through/CHANGES.md
index d848e8b4..646008a0 100644
--- a/share-through/CHANGES.md
+++ b/share-through/CHANGES.md
@@ -1,3 +1,7 @@
+# 2.2.0
+- Use an `https` endpoint
+- Send `secure` param
+
 # 2.1.2
 
 - Add support for Unified ID in `__generateRequestObj` function of adapter code
diff --git a/share-through/DOCUMENTATION.md b/share-through/DOCUMENTATION.md
index 3767f24a..004b487e 100644
--- a/share-through/DOCUMENTATION.md
+++ b/share-through/DOCUMENTATION.md
@@ -50,7 +50,7 @@
   bidId: "_fakeBidId",
   instant_play_capable: "true",
   hbSource: "indexExchange",
-  hbVersion: "2.1.2",
+  hbVersion: "2.2.0",
   cbust: System.now()
 };
 ```
diff --git a/share-through/share-through-htb-system-tests.js b/share-through/share-through-htb-system-tests.js
index e0c3f7e6..666793f8 100644
--- a/share-through/share-through-htb-system-tests.js
+++ b/share-through/share-through-htb-system-tests.js
@@ -10,7 +10,7 @@ function getStatsId() {
 function getBidRequestRegex() {
   return {
     method: "GET",
-    urlRegex: /.*btlr\.sharethrough\.com\/t6oivhQt\/.*/
+    urlRegex: /https:\/\/btlr\.sharethrough\.com\/t6oivhQt\/.*/
   };
 }
 
@@ -44,9 +44,10 @@ function validateBidRequest(request) {
   expect(queryObj.placement_key).toEqual("abc123");
   expect(queryObj.instant_play_capable).toBeDefined();
   expect(queryObj.hbSource).toEqual("indexExchange");
-  expect(queryObj.hbVersion).toEqual("2.1.2");
+  expect(queryObj.hbVersion).toEqual("2.2.0");
   expect(queryObj.cbust).toBeDefined();
   expect(queryObj.consent_required).toEqual("false");
+  expect(queryObj.secure).toBeDefined();
 }
 
 function validateBidRequestWithPrivacy(request) {
@@ -68,7 +69,7 @@ function getValidResponse(request, creative) {
     creatives: [
       {
         adm: creative,
-        cpm: 2,
+        cpm: 2
       }
     ]
   });
diff --git a/share-through/share-through-htb.js b/share-through/share-through-htb.js
index 87a299f4..6eb4dba2 100644
--- a/share-through/share-through-htb.js
+++ b/share-through/share-through-htb.js
@@ -83,17 +83,20 @@ function ShareThroughHtb(configs) {
      * @return {object}
      */
     function __generateRequestObj(returnParcels) {
-        var baseUrl = Browser.getProtocol() + '//btlr.sharethrough.com/t6oivhQt/v1';
+        var baseUrl = 'https://btlr.sharethrough.com/t6oivhQt/v1';
 
         var queryObj = {
             placement_key: returnParcels[0].xSlotRef.placementKey,
             bidId: returnParcels[0].requestId,
             instant_play_capable: __canAutoPlayHTML5Video(),
             hbSource: "indexExchange",
-            hbVersion: "2.1.2",
+            hbVersion: "2.2.0",
             cbust: System.now()
         };
 
+        var nonHttp = __getProtocol().indexOf('http') < 0;
+        queryObj.secure = nonHttp || (__getProtocol().indexOf('https') > -1);
+
         var unifiedID = __getUnifiedID(returnParcels);
         if (unifiedID) {
             queryObj.ttduid = unifiedID;
@@ -160,6 +163,10 @@ function ShareThroughHtb(configs) {
         }
     }
 
+    function __getProtocol() {
+        return document.location.protocol;
+    }
+
     /* =============================================================================
      * STEP 5  | Rendering Pixel
      * -----------------------------------------------------------------------------
@@ -345,7 +352,7 @@ function ShareThroughHtb(configs) {
             partnerId: 'ShareThroughHtb', // PartnerName
             namespace: 'ShareThroughHtb', // Should be same as partnerName
             statsId: 'SHTH', // Unique partner identifier
-            version: '2.1.2',
+            version: '2.2.0',
             targetingType: 'slot',
             enabledAnalytics: {
                 requestTime: true
@@ -385,7 +392,8 @@ function ShareThroughHtb(configs) {
         __baseClass = Partner(__profile, configs, null, {
             parseResponse: __parseResponse,
             generateRequestObj: __generateRequestObj,
-            b64EncodeUnicode: __b64EncodeUnicode
+            b64EncodeUnicode: __b64EncodeUnicode,
+            getProtocol: __getProtocol
         });
     })();