diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index de5ad0a39..13709efde 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -27,6 +27,6 @@ repos:
   hooks:
     - id: sphinx-lint
 - repo: https://github.com/scrapy/sphinx-scrapy
-  rev: 0.7.1
+  rev: 0.8.3
   hooks:
     - id: sphinx-scrapy
diff --git a/docs/news.rst b/docs/news.rst
index d1276b82a..aef567a2a 100644
--- a/docs/news.rst
+++ b/docs/news.rst
@@ -3,6 +3,31 @@
 Release notes
 =============
 
+.. _release-2.15.1:
+
+Scrapy 2.15.1 (2026-04-23)
+--------------------------
+
+Bug fixes
+~~~~~~~~~
+
+-   Sharing of the SSL context between multiple connections, introduced in
+    Scrapy 2.15.0, is reverted as it caused problems and wasn't actually
+    needed.
+    (:issue:`7445`, :issue:`7450`)
+
+-   Fixed :meth:`scrapy.settings.BaseSettings.getwithbase` failing on keys with
+    dots that aren't import names. It now works the way it worked before Scrapy
+    2.15.0, without trying to match class objects and import path. A separate
+    method,
+    :func:`~scrapy.settings.BaseSettings.get_component_priority_dict_with_base`,
+    was added that does that, and it is now used for :ref:`component priority
+    dictionaries <component-priority-dictionaries>`.
+    (:issue:`7426`, :issue:`7449`)
+
+-   Documentation rendering improvements.
+    (:issue:`7452`, :issue:`7454`)
+
 .. _release-2.15.0:
 
 Scrapy 2.15.0 (2026-04-09)
diff --git a/docs/requirements.in b/docs/requirements.in
index 3b1cbb226..13b9dfb5d 100644
--- a/docs/requirements.in
+++ b/docs/requirements.in
@@ -5,4 +5,4 @@ sphinx
 sphinx-notfound-page
 sphinx-rtd-theme
 sphinx-rtd-dark-mode
-sphinx-scrapy @ git+https://github.com/scrapy/sphinx-scrapy.git@0.7.1
+sphinx-scrapy @ git+https://github.com/scrapy/sphinx-scrapy.git@0.8.3
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 6da4a52c9..4d9eb5454 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,5 +1,5 @@
 # This file was autogenerated by uv via the following command:
-#    uv pip compile requirements.in -o requirements.txt
+#    uv pip compile -p 3.13 requirements.in -o requirements.txt
 alabaster==1.0.0
     # via sphinx
 annotated-types==0.7.0
@@ -130,6 +130,7 @@ sphinx==9.1.0
     # via
     #   -r requirements.in
     #   sphinx-copybutton
+    #   sphinx-last-updated-by-git
     #   sphinx-llms-txt
     #   sphinx-markdown-builder
     #   sphinx-notfound-page
@@ -138,9 +139,11 @@ sphinx==9.1.0
     #   sphinxcontrib-jquery
 sphinx-copybutton==0.5.2
     # via sphinx-scrapy
+sphinx-last-updated-by-git==0.3.8
+    # via sphinx-sitemap
 sphinx-llms-txt @ git+https://github.com/zytedata/sphinx-llms-txt.git@5e8866cb0cc249aa2017ad9050b3b83a7ca16f69
     # via sphinx-scrapy
-sphinx-markdown-builder @ git+https://github.com/zytedata/sphinx-markdown-builder.git@ac9f8babfe622e4300099ab44b96d9d9228e742e
+sphinx-markdown-builder @ git+https://github.com/zytedata/sphinx-markdown-builder.git@cfe4c0bfd7b4542f7e6b65a58cdf9ec765829940
     # via sphinx-scrapy
 sphinx-notfound-page==1.1.0
     # via -r requirements.in
@@ -150,8 +153,10 @@ sphinx-rtd-theme==3.1.0
     # via
     #   -r requirements.in
     #   sphinx-rtd-dark-mode
-sphinx-scrapy @ git+https://github.com/scrapy/sphinx-scrapy.git@2b5f6c7de64c8317cb771fdeb2e5020d1c9c9dcf
+sphinx-scrapy @ git+https://github.com/scrapy/sphinx-scrapy.git@f20366277f2598d0c8a60e55fe282aff2da40dcf
     # via -r requirements.in
+sphinx-sitemap==2.9.0
+    # via sphinx-scrapy
 sphinxcontrib-applehelp==2.0.0
     # via sphinx
 sphinxcontrib-devhelp==2.0.0
diff --git a/pyproject.toml b/pyproject.toml
index abafa3037..42d00d526 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -154,7 +154,7 @@ module = [
 ignore_missing_imports = true
 
 [tool.bumpversion]
-current_version = "2.15.0"
+current_version = "2.15.1"
 commit = true
 tag = true
 tag_name = "{new_version}"
diff --git a/scrapy/VERSION b/scrapy/VERSION
index 68e69e405..3b1fc7950 100644
--- a/scrapy/VERSION
+++ b/scrapy/VERSION
@@ -1 +1 @@
-2.15.0
+2.15.1
diff --git a/scrapy/utils/response.py b/scrapy/utils/response.py
index 8b2417bfb..abb5f6a70 100644
--- a/scrapy/utils/response.py
+++ b/scrapy/utils/response.py
@@ -99,7 +99,7 @@ def open_in_browser(
     if isinstance(response, HtmlResponse):
         if b"<base" not in body:
             _remove_html_comments(body)
-            repl = rf'\0<base href="{response.url}">'
+            repl = rf'\g<0><base href="{response.url}">'
             body = re.sub(rb"<head(?:[^<>]*?>)", to_bytes(repl), body, count=1)
         ext = ".html"
     elif isinstance(response, TextResponse):
diff --git a/tests/test_utils_response.py b/tests/test_utils_response.py
index 0aeb5594f..381a9c3ff 100644
--- a/tests/test_utils_response.py
+++ b/tests/test_utils_response.py
@@ -111,36 +111,27 @@ def test_response_status_message():
     assert response_status_message(573) == "573 Unknown Status"
 
 
-def test_inject_base_url():
-    url = "http://www.example.com"
-
-    def check_base_url(burl):
-        path = urlparse(burl).path
-        if not path or not Path(path).exists():
-            path = burl.replace("file://", "")
-        bbody = Path(path).read_bytes()
-        assert bbody.count(b'<base href="' + to_bytes(url) + b'">') == 1
-        return True
-
-    r1 = HtmlResponse(
-        url,
-        body=b"""
+@pytest.mark.parametrize(
+    "body",
+    [
+        pytest.param(
+            b"""
     <html>
         <head><title>Dummy</title></head>
         <body><p>Hello world.</p></body>
     </html>""",
-    )
-    r2 = HtmlResponse(
-        url,
-        body=b"""
+            id="Simple",
+        ),
+        pytest.param(
+            b"""
     <html>
         <head id="foo"><title>Dummy</title></head>
         <body>Hello world.</body>
     </html>""",
-    )
-    r3 = HtmlResponse(
-        url,
-        body=b"""
+            id="<head> with attrs",
+        ),
+        pytest.param(
+            b"""
     <html>
         <head><title>Dummy</title></head>
         <body>
@@ -148,19 +139,19 @@ def test_inject_base_url():
             <p>Hello world.</p>
         </body>
     </html>""",
-    )
-    r4 = HtmlResponse(
-        url,
-        body=b"""
+            id="Misleading tag",
+        ),
+        pytest.param(
+            b"""
     <html>
         <!-- <head>Dummy comment</head> -->
         <head><title>Dummy</title></head>
         <body><p>Hello world.</p></body>
     </html>""",
-    )
-    r5 = HtmlResponse(
-        url,
-        body=b"""
+            id="Misleading comment",
+        ),
+        pytest.param(
+            b"""
     <html>
         <!--[if IE]>
         <head><title>IE head</title></head>
@@ -170,21 +161,24 @@ def test_inject_base_url():
         <!--<![endif]-->
         <body><p>Hello world.</p></body>
     </html>""",
-    )
+            id="Conditional comment",
+        ),
+    ],
+)
+def test_inject_base_url(body: bytes) -> None:
+    url = "http://www.example.com"
 
-    assert open_in_browser(r1, _openfunc=check_base_url), "Inject base url"
-    assert open_in_browser(r2, _openfunc=check_base_url), (
-        "Inject base url with argumented head"
-    )
-    assert open_in_browser(r3, _openfunc=check_base_url), (
-        "Inject unique base url with misleading tag"
-    )
-    assert open_in_browser(r4, _openfunc=check_base_url), (
-        "Inject unique base url with misleading comment"
-    )
-    assert open_in_browser(r5, _openfunc=check_base_url), (
-        "Inject unique base url with conditional comment"
-    )
+    def check_base_url(burl):
+        path = urlparse(burl).path
+        if not path or not Path(path).exists():
+            path = burl.replace("file://", "")
+        bbody = Path(path).read_bytes()
+        assert bbody.count(b'><base href="' + to_bytes(url) + b'">') == 1
+        assert b"<head" in bbody
+        return True
+
+    resp = HtmlResponse(url, body=body)
+    assert open_in_browser(resp, _openfunc=check_base_url)
 
 
 def test_open_in_browser_redos_comment():
diff --git a/tox.ini b/tox.ini
index d0bcb4f81..5060a043f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,7 @@
 
 [tox]
 requires =
-    sphinx-scrapy @ git+https://github.com/scrapy/sphinx-scrapy.git@0.7.1
+    sphinx-scrapy[tox] @ git+https://github.com/scrapy/sphinx-scrapy.git@0.8.3
 envlist = pre-commit,pylint,typing,py,docs
 minversion = 1.7.0