diff --git a/app.json b/app.json
index e28584f..d2664cb 100644
--- a/app.json
+++ b/app.json
@@ -1479,37 +1479,6 @@
           "hint": {
             "en": "Enable debug in case the application is crashing. It allows developer to investigate the issue"
           }
-        },
-        {
-          "id": "encryption_mode",
-          "type": "dropdown",
-          "value": "auto",
-          "label": {
-            "en": "Encryption mode"
-          },
-          "hint": {
-            "en": "Encryption mode used by the HVAC. Most recent firmwares use V2"
-          },
-          "values": [
-            {
-              "id": "auto",
-              "label": {
-                "en": "Autodetect (not implemented yet, V1 used instead)"
-              }
-            },
-            {
-              "id": "v1",
-              "label": {
-                "en": "V1 (HVAC Firmware versions <1.21)"
-              }
-            },
-            {
-              "id": "v2",
-              "label": {
-                "en": "V2 (HVAC Firmware versions >=1.21)"
-              }
-            }
-          ]
         }
       ],
       "images": {
diff --git a/drivers/gree_cooper_hunter_hvac/device.js b/drivers/gree_cooper_hunter_hvac/device.js
index f4a0b0b..1cbfc88 100644
--- a/drivers/gree_cooper_hunter_hvac/device.js
+++ b/drivers/gree_cooper_hunter_hvac/device.js
@@ -82,7 +82,6 @@ class GreeHVACDevice extends Homey.Device {
 
         const deviceData = this.getData();
         const settings = this.getSettings();
-        const encryptionVersion = this.mapEncryptionModeSetting(settings.encryption_mode);
 
         this.log('[find devices]', 'Finding device with mac:', deviceData.mac);
 
@@ -104,7 +103,6 @@ class GreeHVACDevice extends Homey.Device {
                 pollingInterval: POLLING_INTERVAL,
                 pollingTimeout: POLLING_TIMEOUT,
                 connectTimeout: CONNECT_TIMEOUT,
-                encryptionVersion,
             });
 
             this._registerClientListeners();
@@ -676,28 +674,9 @@ class GreeHVACDevice extends Homey.Device {
             }
         }
 
-        if (changedKeys.indexOf('encryption_mode') > -1) {
-            this.log('Changing the encryption mode setting from', oldSettings.encryption_mode, 'to', newSettings.encryption_mode);
-            this.homey.setTimeout(this.reconnect.bind(this), 1000);
-        }
-
         return Promise.resolve();
     }
 
-    mapEncryptionModeSetting(encryptionMode) {
-        switch (encryptionMode) {
-            // not implemented yet
-            case 'auto':
-            case 'v1':
-            default:
-                // AES-ECB
-                return 1;
-            case 'v2':
-                // AES-GCM
-                return 2;
-        }
-    }
-
     reconnect() {
         this.log('Reconnecting to the HVAC');
         this._markOffline();
diff --git a/drivers/gree_cooper_hunter_hvac/driver.compose.json b/drivers/gree_cooper_hunter_hvac/driver.compose.json
index 0f02fee..a73f2d6 100644
--- a/drivers/gree_cooper_hunter_hvac/driver.compose.json
+++ b/drivers/gree_cooper_hunter_hvac/driver.compose.json
@@ -106,37 +106,6 @@
       "hint": {
         "en": "Enable debug in case the application is crashing. It allows developer to investigate the issue"
       }
-    },
-    {
-      "id": "encryption_mode",
-      "type": "dropdown",
-      "value": "auto",
-      "label": {
-        "en": "Encryption mode"
-      },
-      "hint": {
-        "en": "Encryption mode used by the HVAC. Most recent firmwares use V2"
-      },
-      "values": [
-        {
-          "id": "auto",
-          "label": {
-            "en": "Autodetect (not implemented yet, V1 used instead)"
-          }
-        },
-        {
-          "id": "v1",
-          "label": {
-            "en": "V1 (HVAC Firmware versions <1.21)"
-          }
-        },
-        {
-          "id": "v2",
-          "label": {
-            "en": "V2 (HVAC Firmware versions >=1.21)"
-          }
-        }
-      ]
     }
   ],
   "images": {
diff --git a/package-lock.json b/package-lock.json
index 7166bc6..790c29e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,7 @@
     "": {
       "license": "GPL-3.0-or-later",
       "dependencies": {
-        "gree-hvac-client": "github:aivus/gree-hvac-client#com.gree/encryption",
+        "gree-hvac-client": "github:aivus/gree-hvac-client#com.gree/gcm",
         "homey-log": "^2.1.0"
       },
       "devDependencies": {
@@ -3627,7 +3627,7 @@
     },
     "node_modules/gree-hvac-client": {
       "version": "0.0.0-development",
-      "resolved": "git+ssh://git@github.com/aivus/gree-hvac-client.git#7d51627adb76ba50b48fa4f9cd494741c3f2e409",
+      "resolved": "git+ssh://git@github.com/aivus/gree-hvac-client.git#4fd7331f41f518e869534249aa6ac800aea842a2",
       "license": "GPL-3.0",
       "dependencies": {
         "clone": "^2.1.2",
@@ -10534,8 +10534,8 @@
       "dev": true
     },
     "gree-hvac-client": {
-      "version": "git+ssh://git@github.com/aivus/gree-hvac-client.git#7d51627adb76ba50b48fa4f9cd494741c3f2e409",
-      "from": "gree-hvac-client@github:aivus/gree-hvac-client#com.gree/encryption",
+      "version": "git+ssh://git@github.com/aivus/gree-hvac-client.git#4fd7331f41f518e869534249aa6ac800aea842a2",
+      "from": "gree-hvac-client@github:aivus/gree-hvac-client#com.gree/gcm",
       "requires": {
         "clone": "^2.1.2",
         "object-diff": "^0.0.4"
diff --git a/package.json b/package.json
index 9f115a0..ad8b2ae 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
   },
   "homepage": "https://github.com/aivus/com.gree#readme",
   "dependencies": {
-    "gree-hvac-client": "github:aivus/gree-hvac-client#com.gree/encryption",
+    "gree-hvac-client": "github:aivus/gree-hvac-client#com.gree/gcm",
     "homey-log": "^2.1.0"
   },
   "devDependencies": {