diff --git a/src/base/net/downloadmanager.cpp b/src/base/net/downloadmanager.cpp
index 6f231e4a6..d35cdd6bc 100644
--- a/src/base/net/downloadmanager.cpp
+++ b/src/base/net/downloadmanager.cpp
@@ -50,8 +50,8 @@
 #include "base/utils/misc.h"
 #include "proxyconfigurationmanager.h"
 
-// Spoof Firefox 38 user agent to avoid web server banning
-const char DEFAULT_USER_AGENT[] = "Mozilla/5.0 (X11; Linux i686; rv:38.0) Gecko/20100101 Firefox/38.0";
+// Disguise as Firefox to avoid web server banning
+const char DEFAULT_USER_AGENT[] = "Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0";
 
 namespace
 {
diff --git a/src/gui/mainwindow.cpp b/src/gui/mainwindow.cpp
index 76dd2bb54..f7cc8e87c 100644
--- a/src/gui/mainwindow.cpp
+++ b/src/gui/mainwindow.cpp
@@ -2003,7 +2003,11 @@ void MainWindow::installPython()
 {
     setCursor(QCursor(Qt::WaitCursor));
     // Download python
-    const QString installerURL = "https://www.python.org/ftp/python/3.6.6/python-3.6.6.exe";
+#ifdef QBT_APP_64BIT
+    const QString installerURL = "https://www.python.org/ftp/python/3.7.4/python-3.7.4-amd64.exe";
+#else
+    const QString installerURL = "https://www.python.org/ftp/python/3.7.4/python-3.7.4.exe";
+#endif
     Net::DownloadManager::instance()->download(
                 Net::DownloadRequest(installerURL).saveToFile(true)
                 , this, &MainWindow::pythonDownloadFinished);
diff --git a/src/searchengine/nova/helpers.py b/src/searchengine/nova/helpers.py
index 409dd95d4..57db22eac 100644
--- a/src/searchengine/nova/helpers.py
+++ b/src/searchengine/nova/helpers.py
@@ -1,4 +1,4 @@
-#VERSION: 1.43
+#VERSION: 1.44
 
 # Author:
 #  Christophe DUMEZ (chris@qbittorrent.org)
@@ -40,7 +40,7 @@ import tempfile
 import urllib2
 
 # Some sites blocks default python User-agent
-user_agent = 'Mozilla/5.0 (X11; Linux i686; rv:38.0) Gecko/20100101 Firefox/38.0'
+user_agent = 'Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0'
 headers = {'User-Agent': user_agent}
 # SOCKS5 Proxy support
 if ("sock_proxy" in os.environ) and (len(os.environ["sock_proxy"].strip()) > 0):
diff --git a/src/searchengine/nova3/helpers.py b/src/searchengine/nova3/helpers.py
index f17dad5af..2633c0eea 100644
--- a/src/searchengine/nova3/helpers.py
+++ b/src/searchengine/nova3/helpers.py
@@ -1,4 +1,4 @@
-#VERSION: 1.42
+#VERSION: 1.43
 
 # Author:
 #  Christophe DUMEZ (chris@qbittorrent.org)
@@ -40,7 +40,7 @@ import urllib.parse
 import urllib.request
 
 # Some sites blocks default python User-agent
-user_agent = 'Mozilla/5.0 (X11; Linux i686; rv:38.0) Gecko/20100101 Firefox/38.0'
+user_agent = 'Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0'
 headers = {'User-Agent': user_agent}
 # SOCKS5 Proxy support
 if "sock_proxy" in os.environ and len(os.environ["sock_proxy"].strip()) > 0: