diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 52ec3560b..39d14abb2 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -46,5 +46,5 @@ jobs:
       if: "matrix.use_coverage"
       uses: codecov/codecov-action@v3
       with:
-        fail_ci_if_error: true
+        fail_ci_if_error: false
         verbose: true
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 21c2fb69d..3f5891fa5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-# v26.0.0-snapshot
+# v26.1.0a1
 
 Kubernetes API Version: v1.26.1
 
diff --git a/README.md b/README.md
index 3232905b6..8b31b50a1 100644
--- a/README.md
+++ b/README.md
@@ -95,6 +95,7 @@ supported versions of Kubernetes clusters.
 - [client 23.y.z](https://pypi.org/project/kubernetes/23.6.0/): Kubernetes 1.22 or below (+-), Kubernetes 1.23 (✓), Kubernetes 1.24 or above (+-)
 - [client 24.y.z](https://pypi.org/project/kubernetes/24.2.0/): Kubernetes 1.23 or below (+-), Kubernetes 1.24 (✓), Kubernetes 1.25 or above (+-)
 - [client 25.y.z](https://pypi.org/project/kubernetes/25.3.0/): Kubernetes 1.24 or below (+-), Kubernetes 1.25 (✓), Kubernetes 1.26 or above (+-)
+- [client 26.y.z](https://pypi.org/project/kubernetes/26.1.0a1/): Kubernetes 1.25 or below (+-), Kubernetes 1.26 (✓), Kubernetes 1.27 or above (+-)
 
 > See [here](#homogenizing-the-kubernetes-python-client-versions) for an explanation of why there is no v13-v16 release.
 
@@ -144,11 +145,12 @@ between client-python versions.
 | 22.0 Alpha/Beta | Kubernetes main repo, 1.22 branch    | ✗                             |
 | 22.0            | Kubernetes main repo, 1.22 branch    | ✗                             |
 | 23.0 Alpha/Beta | Kubernetes main repo, 1.23 branch    | ✗                             |
-| 23.0            | Kubernetes main repo, 1.23 branch    | ✓                             |
+| 23.0            | Kubernetes main repo, 1.23 branch    | ✗                             |
 | 24.0 Alpha/Beta | Kubernetes main repo, 1.24 branch    | ✗                             |
 | 24.0            | Kubernetes main repo, 1.24 branch    | ✓                             |
 | 25.0 Alpha/Beta | Kubernetes main repo, 1.25 branch    | ✗                             |
 | 25.0            | Kubernetes main repo, 1.25 branch    | ✓                             |
+| 26.0 Alpha/Beta | Kubernetes main repo, 1.26 branch    | ✓                             |
 
 > See [here](#homogenizing-the-kubernetes-python-client-versions) for an explanation of why there is no v13-v16 release.
 
diff --git a/tox.ini b/tox.ini
index 8a6bdac13..b4657af69 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@ envlist =
    py3{6,7,8,9}-functional
 
 [testenv]
-passenv = TOXENV CI TRAVIS TRAVIS_*
+passenv = TOXENV,CI,TRAVIS,TRAVIS_*
 usedevelop = True
 install_command = pip install -U {opts} {packages}
 deps = -r{toxinidir}/test-requirements.txt