diff --git a/.github/workflows/FreeBSD.yml b/.github/workflows/FreeBSD.yml
index 45b08405..83364b3c 100644
--- a/.github/workflows/FreeBSD.yml
+++ b/.github/workflows/FreeBSD.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         include:
-         - TEST_ACME_Server: "LetsEncrypt.org"
+         - TEST_ACME_Server: "LetsEncrypt.org_test"
            CA_ECDSA: ""
            CA: ""
            CA_EMAIL: ""
diff --git a/.github/workflows/MacOS.yml b/.github/workflows/MacOS.yml
index 11d8e5c3..85ec7527 100644
--- a/.github/workflows/MacOS.yml
+++ b/.github/workflows/MacOS.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         include:
-         - TEST_ACME_Server: "LetsEncrypt.org"
+         - TEST_ACME_Server: "LetsEncrypt.org_test"
            CA_ECDSA: ""
            CA: ""
            CA_EMAIL: ""
diff --git a/.github/workflows/Solaris.yml b/.github/workflows/Solaris.yml
index 27e9ad09..64dd741f 100644
--- a/.github/workflows/Solaris.yml
+++ b/.github/workflows/Solaris.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         include:
-         - TEST_ACME_Server: "LetsEncrypt.org"
+         - TEST_ACME_Server: "LetsEncrypt.org_test"
            CA_ECDSA: ""
            CA: ""
            CA_EMAIL: ""
diff --git a/.github/workflows/Ubuntu.yml b/.github/workflows/Ubuntu.yml
index df0faaf3..af74965a 100644
--- a/.github/workflows/Ubuntu.yml
+++ b/.github/workflows/Ubuntu.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         include:
-         - TEST_ACME_Server: "LetsEncrypt.org"
+         - TEST_ACME_Server: "LetsEncrypt.org_test"
            CA_ECDSA: ""
            CA: ""
            CA_EMAIL: ""
diff --git a/.github/workflows/Windows.yml b/.github/workflows/Windows.yml
index 69ed64ea..8c8e2842 100644
--- a/.github/workflows/Windows.yml
+++ b/.github/workflows/Windows.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         include:
-         - TEST_ACME_Server: "LetsEncrypt.org"
+         - TEST_ACME_Server: "LetsEncrypt.org_test"
            CA_ECDSA: ""
            CA: ""
            CA_EMAIL: ""