diff --git a/.github/workflows/selftest.macos-11.yml b/.github/workflows/selftest.macos-11.yml
index 3bb8d49..a4141a3 100644
--- a/.github/workflows/selftest.macos-11.yml
+++ b/.github/workflows/selftest.macos-11.yml
@@ -71,6 +71,7 @@ jobs:
           - 9.6.3
           - 9.6.4
           - 9.6.5
+          - 9.6.6
           - 9.8.1
           - 9.8.2
           - 9.10.1
diff --git a/.github/workflows/selftest.macos-12.yml b/.github/workflows/selftest.macos-12.yml
index a3f79d2..87c40e6 100644
--- a/.github/workflows/selftest.macos-12.yml
+++ b/.github/workflows/selftest.macos-12.yml
@@ -71,6 +71,7 @@ jobs:
           - 9.6.3
           - 9.6.4
           - 9.6.5
+          - 9.6.6
           - 9.8.1
           - 9.8.2
           - 9.10.1
diff --git a/.github/workflows/selftest.ubuntu-20.04.yml b/.github/workflows/selftest.ubuntu-20.04.yml
index 282f271..72c7674 100644
--- a/.github/workflows/selftest.ubuntu-20.04.yml
+++ b/.github/workflows/selftest.ubuntu-20.04.yml
@@ -75,6 +75,7 @@ jobs:
           - 9.6.3
           - 9.6.4
           - 9.6.5
+          - 9.6.6
           - 9.8.1
           - 9.8.2
           - 9.10.1
diff --git a/.github/workflows/selftest.ubuntu-22.04.yml b/.github/workflows/selftest.ubuntu-22.04.yml
index ec9fd39..886ef76 100644
--- a/.github/workflows/selftest.ubuntu-22.04.yml
+++ b/.github/workflows/selftest.ubuntu-22.04.yml
@@ -70,6 +70,7 @@ jobs:
           - 9.6.3
           - 9.6.4
           - 9.6.5
+          - 9.6.6
           - 9.8.1
           - 9.8.2
           - 9.10.1
diff --git a/.github/workflows/selftest.windows-2019.yml b/.github/workflows/selftest.windows-2019.yml
index 8d23111..f8edd4a 100644
--- a/.github/workflows/selftest.windows-2019.yml
+++ b/.github/workflows/selftest.windows-2019.yml
@@ -71,6 +71,7 @@ jobs:
           - 9.6.3
           - 9.6.4
           - 9.6.5
+          - 9.6.6
           - 9.8.1
           - 9.8.2
           - 9.10.1
diff --git a/.github/workflows/selftest.windows-2022.yml b/.github/workflows/selftest.windows-2022.yml
index 7ed46be..d1d73cd 100644
--- a/.github/workflows/selftest.windows-2022.yml
+++ b/.github/workflows/selftest.windows-2022.yml
@@ -70,6 +70,7 @@ jobs:
           - 9.6.3
           - 9.6.4
           - 9.6.5
+          - 9.6.6
           - 9.8.1
           - 9.8.2
           - 9.10.1
diff --git a/README.md b/README.md
index 5a48253..aea8097 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,8 @@
 | `latest` `9.10` `9.10.1` |       🟢       |       🟢       |     🟢     |     🟢     |       🟢       |       🟢       |
 | `9.8` `9.8.2`            |       🟢       |       🟢       |     🟢     |     🟢     |       🟢       |       🟢       |
 | `9.8.1`                  |       🟢       |       🟢       |     🟢     |     🟢     |       🟢       |       🟢       |
-| `9.6` `9.6.5`            |       🟢       |       🟢       |     🟢     |     🟢     |       🟢       |       🟢       |
+| `9.6` `9.6.6`            |       🟢       |       🟢       |     🟢     |     🟢     |       🟢       |       🟢       |
+| `9.6.5`                  |       🟢       |       🟢       |     🟢     |     🟢     |       🟢       |       🟢       |
 | `9.6.4`                  |       🟢       |       🟢       |     🟢     |     🟢     |       🟢       |       🟢       |
 | `9.6.3`                  |       🟢       |       🟢       |     🟢     |     🟢     |       🟢       |       🟢       |
 | `9.6.2`                  |       🟢       |       🟢       |     🟢     |     🟢     |       🟢       |       🟢       |