diff --git a/requirements-testing.txt b/requirements-testing.txt
index a6041972cd..acb3d4d700 100644
--- a/requirements-testing.txt
+++ b/requirements-testing.txt
@@ -12,7 +12,6 @@ asttokens
 responses
 pysocks
 socksio
-httpcore[http2]
 setuptools
 Brotli
 docker
diff --git a/scripts/populate_tox/config.py b/scripts/populate_tox/config.py
index 317afa53ca..a8b9174b24 100644
--- a/scripts/populate_tox/config.py
+++ b/scripts/populate_tox/config.py
@@ -108,8 +108,8 @@
                 "djangorestframework",
                 "pytest-django",
                 "Werkzeug",
+                "channels[daphne]",
             ],
-            ">=2.0": ["channels[daphne]"],
             ">=2.2,<3.1": ["six"],
             ">=3.0": ["pytest-asyncio"],
             "<3.3": [
@@ -117,6 +117,7 @@
                 "Werkzeug<2.1.0",
             ],
             "<3.1": ["pytest-django<4.0"],
+            "py3.6": ["dataclasses"],
             "py3.14,py3.14t": ["coverage==7.11.0"],
         },
     },
@@ -162,6 +163,7 @@
                 "itsdangerous>=0.24,<2.0",
                 "jinja2<3.1.1",
             ],
+            "py3.6": ["dataclasses"],
         },
     },
     "gql": {
@@ -512,6 +514,7 @@
         "deps": {
             "*": ["werkzeug"],
             "<=5.0": ["werkzeug<1.0"],
+            "py3.6": ["dataclasses"],
         },
     },
     "typer": {
diff --git a/scripts/populate_tox/tox.jinja b/scripts/populate_tox/tox.jinja
index 40426d30fb..d3d88dbb48 100644
--- a/scripts/populate_tox/tox.jinja
+++ b/scripts/populate_tox/tox.jinja
@@ -78,9 +78,10 @@ deps =
     -r requirements-testing.txt
 
     # === Common ===
+    py3.6-common: dataclasses
     py3.8-common: hypothesis
     common: pytest-asyncio
-    common: httpcore[asyncio]
+    common: httpcore[asyncio,http2]
     # See https://github.com/pytest-dev/pytest/issues/9621
     # and https://github.com/pytest-dev/pytest-forked/issues/67
     # for justification of the upper bound on pytest
@@ -90,6 +91,7 @@ deps =
     {py3.14,py3.14t}-common: coverage==7.11.0
 
     # === Gevent ===
+    py3.6-gevent: dataclasses
     {py3.6,py3.7,py3.8,py3.9,py3.10,py3.11}-gevent: gevent>=22.10.0, <22.11.0
     {py3.12}-gevent: gevent
     # See https://github.com/pytest-dev/pytest/issues/9621
@@ -97,6 +99,7 @@ deps =
     # for justification of the upper bound on pytest
     {py3.6,py3.7}-gevent: pytest<7.0.0
     {py3.8,py3.9,py3.10,py3.11,py3.12}-gevent: pytest
+    gevent: httpcore[http2]
     gevent: pytest-asyncio
     gevent: setuptools<82
     {py3.10,py3.11}-gevent: zope.event<5.0.0
diff --git a/sentry_sdk/utils.py b/sentry_sdk/utils.py
index 4e362cae54..f6d9b66b9c 100644
--- a/sentry_sdk/utils.py
+++ b/sentry_sdk/utils.py
@@ -83,6 +83,7 @@
 
 _installed_modules = None
 
+
 BASE64_ALPHABET = re.compile(r"^[a-zA-Z0-9/+=]*$")
 
 FALSY_ENV_VALUES = frozenset(("false", "f", "n", "no", "off", "0"))
diff --git a/tox.ini b/tox.ini
index e91115d32e..30d608ff56 100644
--- a/tox.ini
+++ b/tox.ini
@@ -401,9 +401,10 @@ deps =
     -r requirements-testing.txt
 
     # === Common ===
+    py3.6-common: dataclasses
     py3.8-common: hypothesis
     common: pytest-asyncio
-    common: httpcore[asyncio]
+    common: httpcore[asyncio,http2]
     # See https://github.com/pytest-dev/pytest/issues/9621
     # and https://github.com/pytest-dev/pytest-forked/issues/67
     # for justification of the upper bound on pytest
@@ -413,6 +414,7 @@ deps =
     {py3.14,py3.14t}-common: coverage==7.11.0
 
     # === Gevent ===
+    py3.6-gevent: dataclasses
     {py3.6,py3.7,py3.8,py3.9,py3.10,py3.11}-gevent: gevent>=22.10.0, <22.11.0
     {py3.12}-gevent: gevent
     # See https://github.com/pytest-dev/pytest/issues/9621
@@ -420,6 +422,7 @@ deps =
     # for justification of the upper bound on pytest
     {py3.6,py3.7}-gevent: pytest<7.0.0
     {py3.8,py3.9,py3.10,py3.11,py3.12}-gevent: pytest
+    gevent: httpcore[http2]
     gevent: pytest-asyncio
     gevent: setuptools<82
     {py3.10,py3.11}-gevent: zope.event<5.0.0
@@ -12179,7 +12182,6 @@ deps =
 
     django-latest: django==6.0.6
 
-    django-latest: channels[daphne]
     django-latest: pytest-asyncio
 
     py3.12-django-latest: asgiref==3.11.1
@@ -12198,12 +12200,7 @@ deps =
     django: djangorestframework
     django: pytest-django
     django: Werkzeug
-    django-v2.2.28: channels[daphne]
-    django-v3.2.25: channels[daphne]
-    django-v4.2.30: channels[daphne]
-    django-v5.2.15: channels[daphne]
-    django-v6.0.6: channels[daphne]
-    django-v6.1a1: channels[daphne]
+    django: channels[daphne]
     django-v2.2.28: six
     django-v3.2.25: pytest-asyncio
     django-v4.2.30: pytest-asyncio
@@ -12218,8 +12215,8 @@ deps =
     django-v3.2.25: Werkzeug<2.1.0
     django-v1.11.29: pytest-django<4.0
     django-v2.2.28: pytest-django<4.0
+    {py3.6}-django: dataclasses
     {py3.14,py3.14t}-django: coverage==7.11.0
-    django-latest: channels[daphne]
     django-latest: pytest-asyncio
 
     flask-v1.1.4: flask==1.1.4
@@ -12333,6 +12330,7 @@ deps =
     flask-v1.1.4: markupsafe<2.0.0
     flask-v1.1.4: itsdangerous>=0.24,<2.0
     flask-v1.1.4: jinja2<3.1.1
+    {py3.6}-flask: dataclasses
 
     starlette-v0.16.0: starlette==0.16.0
 
@@ -14132,6 +14130,7 @@ deps =
     trytond: werkzeug
     trytond-v4.6.22: werkzeug<1.0
     trytond-v4.8.18: werkzeug<1.0
+    {py3.6}-trytond: dataclasses
 
     typer-v0.15.4: typer==0.15.4