diff --git a/scrapy/utils/response.py b/scrapy/utils/response.py
index 1ae987b7a..ae13b12ba 100644
--- a/scrapy/utils/response.py
+++ b/scrapy/utils/response.py
@@ -131,7 +131,7 @@ def _get_encoding_or_mime_types_from_headers(
             return encoding, None
         mime_types.append(mime_type)
     if b'Content-Type' in headers:
-        mime_types.append(headers[b'Content-Type'].split(b';')[0])
+        mime_types.append(headers[b'Content-Type'])
     return None, mime_types
 
 
diff --git a/setup.py b/setup.py
index 2153c03fc..d5ba186a4 100644
--- a/setup.py
+++ b/setup.py
@@ -34,7 +34,9 @@ install_requires = [
     'packaging',
     'tldextract',
     'lxml>=4.3.0',
-    'xtractmime>=0.1.0',
+    # TODO: Release a new version of xtractmime and use it as the minimum
+    # version here.
+    'xtractmime @ git+https://github.com/scrapy/xtractmime@c65d09c94836547dd7c6a659fe9740c112253526',
 ]
 extras_require = {}
 cpython_dependencies = [
diff --git a/tests/test_utils_response.py b/tests/test_utils_response.py
index cd9d9c36f..3c150faab 100644
--- a/tests/test_utils_response.py
+++ b/tests/test_utils_response.py
@@ -33,26 +33,17 @@ PRE_XTRACTMIME_SCENARIOS = (
     # affected by the Apache bug.
     #
     # https://mimesniff.spec.whatwg.org/#interpreting-the-resource-metadata
-    (
-        {
-            'body': b'\x00\x01\xff',
-            'headers': Headers({'Content-Type': ['text/json']}),
-        },
-        TextResponse,
-    ),
     *(
-        pytest.param(
+        (
             {
                 'body': b'\x00\x01\xff',
                 'headers': Headers({'Content-Type': [content_type]}),
             },
             TextResponse,
-            marks=pytest.mark.xfail(
-                strict=True,
-                reason="https://github.com/scrapy/xtractmime/issues/13",
-            ),
         )
         for content_type in (
+            'text/json',
+            # text/plain variants *not* affected by the Apache bug
             'text/plain; charset=Iso-8859-1',
             'text/plain; charset=utf-8',
             'text/plain; charset=windows-1252',