diff --git a/CHANGELOG.md b/CHANGELOG.md
index 754e9b42..72d14740 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,19 @@
 ## Change log
 
+### Version: 3.17.1
+#### Date: April-18-2023
+##### Bug fix:
+ - Access token for header issue resolved
+
+### Version: 3.17.0
+#### Date: March-30-2023
+##### Bug fix:
+ - Cache set issue resolved
+ - Type-definition for SyncResult updated
+
+### Version: 3.16.1
+#### Date: February-28-2023
+ - Package dependency updated
 ### Version: 3.16.0
 #### Date: February-10-2023
 #####  New Features:
diff --git a/docs-config.json b/docs-config.json
index dad0bb52..12f4bdf9 100755
--- a/docs-config.json
+++ b/docs-config.json
@@ -18,16 +18,6 @@
             "src/core/cache.js"
         ]
     },
-    "templates": 
-    {
-        "default": 
-        {
-            "staticFiles": 
-            {
-                "include": [ "./contentstack-templates/favicon.ico"]
-            }
-        }
-    },
     "tags": {
         "dictionaries": ["jsdoc", "closure"],
         "allowUnknownTags": true
diff --git a/package-lock.json b/package-lock.json
index 0000074c..c93e6a11 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "contentstack",
-  "version": "3.17.0",
+  "version": "3.17.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -9142,6 +9142,12 @@
       "integrity": "sha512-9QNk5KwDF+Bvz+PyObkmSYjI5ksVUYtjW7AU22r2NKcfLJcXp96hkDWU3+XndOsUb+AQ9QhfzfCT2O+CNWT5Tw==",
       "dev": true
     },
+    "taffydb": {
+      "version": "2.7.3",
+      "resolved": "https://registry.npmjs.org/taffydb/-/taffydb-2.7.3.tgz",
+      "integrity": "sha512-GQ3gtYFSOAxSMN/apGtDKKkbJf+8izz5YfbGqIsUc7AMiQOapARZ76dhilRY2h39cynYxBFdafQo5HUL5vgkrg==",
+      "dev": true
+    },
     "tap": {
       "version": "16.3.4",
       "resolved": "https://registry.npmjs.org/tap/-/tap-16.3.4.tgz",
diff --git a/package.json b/package.json
index c38dd1fa..aa892e05 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "contentstack",
-  "version": "3.17.0",
+  "version": "3.17.1",
   "description": "Contentstack Javascript SDK",
   "homepage": "https://www.contentstack.com/",
   "author": {
@@ -89,6 +89,7 @@
     "nodemailer": "^6.9.1",
     "request": "^2.88.2",
     "string-replace-loader": "1.3.0",
+    "taffydb": "^2.7.3",
     "tap": "^16.3.4",
     "tap-html": "^1.1.0",
     "tap-json": "1.0.0",
diff --git a/src/core/modules/assets.js b/src/core/modules/assets.js
index 399f2017..91d8da61 100755
--- a/src/core/modules/assets.js
+++ b/src/core/modules/assets.js
@@ -120,7 +120,7 @@ export default class Assets {
         if (this.asset_uid) {
             this.requestParams = {
                 method: 'POST',
-                headers: this.headers,
+                headers: Utils.mergeDeep({}, this.headers),
                 url: this.config.protocol + "://" + this.config.host + ':' + this.config.port + '/' + this.config.version + this.config.urls.assets + this.asset_uid,
                 body: {
                     _method: 'GET',
diff --git a/src/core/modules/entry.js b/src/core/modules/entry.js
index c0015dce..bbd1cbe1 100755
--- a/src/core/modules/entry.js
+++ b/src/core/modules/entry.js
@@ -355,7 +355,7 @@ export default class Entry {
         if (this.entry_uid) {
             this.requestParams = {
                 method: 'POST',
-                headers: this.headers,
+                headers: Utils.mergeDeep({}, this.headers),
                 url: this.config.protocol + "://" + host + '/' + this.config.version + this.config.urls.content_types + this.content_type_uid + this.config.urls.entries + this.entry_uid,
                 body: {
                     _method: 'GET',
diff --git a/src/core/modules/query.js b/src/core/modules/query.js
index a64e308f..918cf646 100755
--- a/src/core/modules/query.js
+++ b/src/core/modules/query.js
@@ -445,7 +445,7 @@ export default class Query extends Entry {
         this._query['count'] = true;
         this.requestParams = {
             method: 'POST',
-            headers: this.headers,
+            headers: Utils.mergeDeep({}, this.headers),
             url: url,
             body: {
                 _method: 'GET',
@@ -754,7 +754,7 @@ export default class Query extends Entry {
             url = (this.type && this.type === 'asset') ? baseURL + this.config.urls.assets : baseURL + this.config.urls.content_types + this.content_type_uid + this.config.urls.entries;
         this.requestParams = {
             method: 'POST',
-            headers: this.headers,
+            headers: Utils.mergeDeep({}, this.headers),
             url: url,
             body: {
                 _method: 'GET',
@@ -791,7 +791,7 @@ export default class Query extends Entry {
         this._query.limit = 1;
         this.requestParams = {
             method: 'POST',
-            headers: this.headers,
+            headers: Utils.mergeDeep({}, this.headers),
             url: url,
             body: {
                 _method: 'GET',
diff --git a/src/core/stack.js b/src/core/stack.js
index 6ecdb058..052d81e5 100755
--- a/src/core/stack.js
+++ b/src/core/stack.js
@@ -382,7 +382,7 @@ export default class Stack {
     fetch(fetchOptions) {
         this.requestParams = {
             method: 'POST',
-            headers: this.headers,
+            headers: Utils.mergeDeep({}, this.headers),
             plugins: this.plugins,
             url: this.config.protocol + "://" + this.config.host + ':' + this.config.port + '/' + this.config.version + this.config.urls.content_types + this.content_type_uid,
             body: {
@@ -464,7 +464,7 @@ export default class Stack {
     getLastActivities() {
         this.requestParams = {
             method: 'POST',
-            headers: this.headers,
+            headers: Utils.mergeDeep({}, this.headers),
             url: this.config.protocol + "://" + this.config.host + ':' + this.config.port + '/' + this.config.version + this.config.urls.content_types,
             body: {
                 _method: 'GET',
@@ -494,7 +494,7 @@ export default class Stack {
     getContentTypes(param = {}) { 
         this.requestParams = {
             method: 'POST',
-            headers: this.headers,
+            headers: Utils.mergeDeep({}, this.headers),
             url: this.config.protocol + "://" + this.config.host + ':' + this.config.port + '/' + this.config.version + this.config.urls.content_types,
             body: {
                 _method: 'GET',
@@ -537,7 +537,7 @@ export default class Stack {
         this._query = Utils.mergeDeep(this._query, params);
         this.requestParams = {
             method: 'POST',
-            headers: this.headers,
+            headers: Utils.mergeDeep({}, this.headers),
             url: this.config.protocol + "://" + this.config.host + ':' + this.config.port + '/' + this.config.version + this.config.urls.sync,
             body: {
                 _method: 'GET',