diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index c7472ef895..e5917db88b 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -51,7 +51,7 @@ jobs:
         env:
           RUBY_TESTOPTS: "-q --tty=no"
           # Remove minitest from TEST_BUNDLED_GEMS_ALLOW_FAILURES if https://github.com/seattlerb/minitest/pull/798 is resolved
-          TEST_BUNDLED_GEMS_ALLOW_FAILURES: "minitest,rexml"
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: "rexml"
       - uses: k0kubun/action-slack@v2.0.0
         with:
           payload: |
diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index 0df3b0a12d..bafb4b3e77 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -73,7 +73,7 @@ jobs:
         env:
           RUBY_TESTOPTS: "-q --tty=no"
           # Remove minitest from TEST_BUNDLED_GEMS_ALLOW_FAILURES if https://github.com/seattlerb/minitest/pull/798 is resolved
-          TEST_BUNDLED_GEMS_ALLOW_FAILURES: "minitest"
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ""
       - uses: k0kubun/action-slack@v2.0.0
         with:
           payload: |