diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index 0047a90f4b..add46cfa8c 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -50,7 +50,7 @@ jobs:
       - shell: bash
         run: |
           cp /opt/homebrew/opt/libsodium/lib/libsodium.dylib /Library/Frameworks/Python.framework/Versions/3.9/lib/libsodium.dylib
-          sed -i".backup" 's|libtorrent==1.2.19|https://tribler.org/libtorrent-2.0.11-cp39-cp39-macosx_14_0_arm64.whl|' requirements.txt
+          sed -i".backup" 's|libtorrent==2.0.9|https://tribler.org/libtorrent-2.0.11-cp39-cp39-macosx_14_0_arm64.whl|' requirements.txt
       - run: python -m pip install -r requirements.txt
       - name: Run unit tests
         run: |
diff --git a/build/docker/build.Dockerfile b/build/docker/build.Dockerfile
index 050b940428..3050801ab3 100644
--- a/build/docker/build.Dockerfile
+++ b/build/docker/build.Dockerfile
@@ -1,4 +1,4 @@
-# libtorrent-1.2.19 does not support python 3.11 yet
+# libtorrent-2.0.9 does not support python 3.11 yet
 FROM python:3.10-slim
 
 RUN apt-get update \
diff --git a/requirements.txt b/requirements.txt
index e50a57f64e..530e2c51f9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,8 +3,9 @@
 bitarray
 configobj
 ipv8-rust-tunnels
-libtorrent==1.2.19
+libtorrent==2.0.9
 lz4
+marshmallow==3.23.3  # TODO: support 3.24.0 onward
 pillow
 pony
 pystray
diff --git a/src/tribler/core/libtorrent/download_manager/download_manager.py b/src/tribler/core/libtorrent/download_manager/download_manager.py
index adb6ff0b41..8eccfcc723 100644
--- a/src/tribler/core/libtorrent/download_manager/download_manager.py
+++ b/src/tribler/core/libtorrent/download_manager/download_manager.py
@@ -287,7 +287,8 @@ def create_session(self, hops: int = 0) -> lt.session:  # noqa: PLR0915
                                             "enable_upnp": int(self.config.get("libtorrent/upnp")),
                                             "enable_dht": int(self.config.get("libtorrent/dht")),
                                             "enable_lsd": int(self.config.get("libtorrent/lsd")),
-                                            "enable_natpmp": int(self.config.get("libtorrent/natpmp"))}
+                                            "enable_natpmp": int(self.config.get("libtorrent/natpmp")),
+                                            "allow_i2p_mixed": 1}
 
         # Copy construct so we don't modify the default list
         extensions = list(DEFAULT_LT_EXTENSIONS)
@@ -633,13 +634,8 @@ async def start_download_from_uri(self, uri: str, config: DownloadConfig | None
         if scheme == "magnet":
             logger.info("Magnet scheme detected")
             params = lt.parse_magnet_uri(uri)
-            try:
-                # libtorrent 1.2.19
-                name, infohash = params["name"].encode(), params["info_hash"]  # type: ignore[index] # (checker is 2.X)
-            except TypeError:
-                # libtorrent 2.0.9
-                name = params.name.encode()
-                infohash = unhexlify(str(params.info_hash))
+            name = params.name.encode()
+            infohash = unhexlify(str(params.info_hash))
             logger.info("Name: %s. Infohash: %s", name, infohash)
             if infohash in self.metainfo_cache:
                 logger.info("Metainfo found in cache")
diff --git a/src/tribler/core/libtorrent/restapi/torrentinfo_endpoint.py b/src/tribler/core/libtorrent/restapi/torrentinfo_endpoint.py
index 53a9113b96..c1cb6eeaab 100644
--- a/src/tribler/core/libtorrent/restapi/torrentinfo_endpoint.py
+++ b/src/tribler/core/libtorrent/restapi/torrentinfo_endpoint.py
@@ -181,12 +181,7 @@ async def get_torrent_info(self, request: Request) -> RESTResponse:  # noqa: C90
 
             if response.startswith(b'magnet'):
                 try:
-                    try:
-                        # libtorrent 1.2.19
-                        infohash = lt.parse_magnet_uri(uri)["info_hash"]  # type: ignore[index] # (checker uses 2.X)
-                    except TypeError:
-                        # libtorrent 2.0.9
-                        infohash = unhexlify(str(lt.parse_magnet_uri(uri).info_hash))
+                    infohash = unhexlify(str(lt.parse_magnet_uri(uri).info_hash))
                 except RuntimeError as e:
                     return RESTResponse(
                         {"error": {
@@ -203,12 +198,7 @@ async def get_torrent_info(self, request: Request) -> RESTResponse:  # noqa: C90
             self._logger.info("magnet scheme detected")
 
             try:
-                try:
-                    # libtorrent 1.2.19
-                    infohash = lt.parse_magnet_uri(uri)["info_hash"]  # type: ignore[index] # (checker uses 2.X)
-                except TypeError:
-                    # libtorrent 2.0.9
-                    infohash = unhexlify(str(lt.parse_magnet_uri(uri).info_hash))
+                infohash = unhexlify(str(lt.parse_magnet_uri(uri).info_hash))
             except RuntimeError as e:
                 return RESTResponse(
                     {"error": {