diff --git a/lib/config/isrg_x1.dart b/lib/config/isrg_x1.dart
new file mode 100644
index 00000000..6a6d0ac2
--- /dev/null
+++ b/lib/config/isrg_x1.dart
@@ -0,0 +1,32 @@
+// ignore: constant_identifier_names
+const String ISRG_X1 = """-----BEGIN CERTIFICATE-----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=
+-----END CERTIFICATE-----""";
diff --git a/lib/utils/client_manager.dart b/lib/utils/client_manager.dart
index 44047d9a..a042e6ee 100644
--- a/lib/utils/client_manager.dart
+++ b/lib/utils/client_manager.dart
@@ -7,6 +7,7 @@ import 'package:matrix/encryption/utils/key_verification.dart';
 import 'package:matrix/matrix.dart';
 import 'package:path_provider/path_provider.dart';
 
+import 'package:fluffychat/utils/custom_http_client.dart';
 import 'package:fluffychat/utils/custom_image_resizer.dart';
 import 'package:fluffychat/utils/matrix_sdk_extensions.dart/flutter_hive_collections_database.dart';
 import 'package:fluffychat/utils/platform_infos.dart';
@@ -82,29 +83,33 @@ abstract class ClientManager {
     await Store().setItem(clientNamespace, jsonEncode(clientNamesList));
   }
 
-  static Client createClient(String clientName) => Client(
-        clientName,
-        verificationMethods: {
-          KeyVerificationMethod.numbers,
-          if (kIsWeb || PlatformInfos.isMobile || PlatformInfos.isLinux)
-            KeyVerificationMethod.emoji,
-        },
-        importantStateEvents: <String>{
-          // To make room emotes work
-          'im.ponies.room_emotes',
-          // To check which story room we can post in
-          EventTypes.RoomPowerLevels,
-        },
-        databaseBuilder: FlutterHiveCollectionsDatabase.databaseBuilder,
-        legacyDatabaseBuilder: FlutterFluffyBoxDatabase.databaseBuilder,
-        supportedLoginTypes: {
-          AuthenticationTypes.password,
-          if (PlatformInfos.isMobile ||
-              PlatformInfos.isWeb ||
-              PlatformInfos.isMacOS)
-            AuthenticationTypes.sso
-        },
-        compute: compute,
-        customImageResizer: PlatformInfos.isMobile ? customImageResizer : null,
-      );
+  static Client createClient(String clientName) {
+    final _client = CustomHttpClient.createHTTPClient();
+    return Client(
+      clientName,
+      httpClient: _client,
+      verificationMethods: {
+        KeyVerificationMethod.numbers,
+        if (kIsWeb || PlatformInfos.isMobile || PlatformInfos.isLinux)
+          KeyVerificationMethod.emoji,
+      },
+      importantStateEvents: <String>{
+        // To make room emotes work
+        'im.ponies.room_emotes',
+        // To check which story room we can post in
+        EventTypes.RoomPowerLevels,
+      },
+      databaseBuilder: FlutterHiveCollectionsDatabase.databaseBuilder,
+      legacyDatabaseBuilder: FlutterFluffyBoxDatabase.databaseBuilder,
+      supportedLoginTypes: {
+        AuthenticationTypes.password,
+        if (PlatformInfos.isMobile ||
+            PlatformInfos.isWeb ||
+            PlatformInfos.isMacOS)
+          AuthenticationTypes.sso
+      },
+      compute: compute,
+      customImageResizer: PlatformInfos.isMobile ? customImageResizer : null,
+    );
+  }
 }
diff --git a/lib/utils/custom_http_client.dart b/lib/utils/custom_http_client.dart
new file mode 100644
index 00000000..479e5edb
--- /dev/null
+++ b/lib/utils/custom_http_client.dart
@@ -0,0 +1,30 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:http/http.dart' as http;
+import 'package:http/io_client.dart';
+
+import 'package:fluffychat/config/isrg_x1.dart';
+
+class CustomHttpClient {
+  static HttpClient customHttpClient(String? cert) {
+    final context = SecurityContext.defaultContext;
+
+    try {
+      if (cert != null) {
+        final bytes = utf8.encode(cert);
+        context.setTrustedCertificatesBytes(bytes);
+      }
+    } on TlsException catch (e) {
+      if (e.osError != null &&
+          e.osError!.message.contains('CERT_ALREADY_IN_HASH_TABLE')) {
+      } else {
+        rethrow;
+      }
+    }
+
+    return HttpClient(context: context);
+  }
+
+  static http.Client createHTTPClient() => IOClient(customHttpClient(ISRG_X1));
+}
diff --git a/lib/widgets/matrix.dart b/lib/widgets/matrix.dart
index 8be503d0..0d208bbb 100644
--- a/lib/widgets/matrix.dart
+++ b/lib/widgets/matrix.dart
@@ -519,7 +519,7 @@ class MatrixState extends State<Matrix> with WidgetsBindingObserver {
     onLoginStateChanged.values.map((s) => s.cancel());
     onOwnPresence.values.map((s) => s.cancel());
     onNotification.values.map((s) => s.cancel());
-
+    client.httpClient.close();
     onFocusSub?.cancel();
     onBlurSub?.cancel();
     _backgroundPush?.onLogin?.cancel();
diff --git a/pubspec.lock b/pubspec.lock
index 66fdbbbe..e5986b1b 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -939,7 +939,7 @@ packages:
     description:
       path: "."
       ref: null-safety
-      resolved-ref: "a3d4020911860ff091d90638ab708604b71d2c5a"
+      resolved-ref: a3d4020911860ff091d90638ab708604b71d2c5a
       url: "https://github.com/TheOneWithTheBraid/keyboard_shortcuts.git"
     source: git
     version: "0.1.4"
@@ -1947,7 +1947,7 @@ packages:
       name: visibility_detector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.2"
+    version: "0.3.3"
   vm_service:
     dependency: transitive
     description: