diff --git a/.github/workflows/tests-macos.yml b/.github/workflows/tests-macos.yml
index 0409b3ef2..421336fd0 100644
--- a/.github/workflows/tests-macos.yml
+++ b/.github/workflows/tests-macos.yml
@@ -26,6 +26,14 @@ jobs:
             env:
               TOXENV: no-reactor
 
+          # 3.15 pre-release
+          - python-version: "3.15.0-beta.2"
+            env:
+              TOXENV: py
+          - python-version: "3.15.0-beta.2"
+            env:
+              TOXENV: no-reactor
+
     steps:
     - uses: actions/checkout@v6
 
diff --git a/.github/workflows/tests-ubuntu.yml b/.github/workflows/tests-ubuntu.yml
index a57ea3797..2d7945322 100644
--- a/.github/workflows/tests-ubuntu.yml
+++ b/.github/workflows/tests-ubuntu.yml
@@ -84,13 +84,13 @@ jobs:
             TOXENV: mitmproxy
 
         # 3.15 pre-release
-        - python-version: "3.15.0-beta.1"
+        - python-version: "3.15.0-beta.2"
           env:
             TOXENV: py
-        - python-version: "3.15.0-beta.1"
+        - python-version: "3.15.0-beta.2"
           env:
             TOXENV: default-reactor
-        - python-version: "3.15.0-beta.1"
+        - python-version: "3.15.0-beta.2"
           env:
             TOXENV: no-reactor
 
diff --git a/.github/workflows/tests-windows.yml b/.github/workflows/tests-windows.yml
index f413782bc..a42dcae39 100644
--- a/.github/workflows/tests-windows.yml
+++ b/.github/workflows/tests-windows.yml
@@ -53,6 +53,17 @@ jobs:
           env:
             TOXENV: extra-deps
 
+        # 3.15 pre-release
+        - python-version: "3.15.0-beta.2"
+          env:
+            TOXENV: py
+        - python-version: "3.15.0-beta.2"
+          env:
+            TOXENV: default-reactor
+        - python-version: "3.15.0-beta.2"
+          env:
+            TOXENV: no-reactor
+
     steps:
     - uses: actions/checkout@v6