diff --git a/.github/workflows/test-antora.yml b/.github/workflows/test-antora.yml
index 20ceeb4..87e578f 100644
--- a/.github/workflows/test-antora.yml
+++ b/.github/workflows/test-antora.yml
@@ -22,8 +22,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [16.x, 18.x, 20.x]
-        antora-version: ['3.1.10', '3.2.0-alpha.8']
+        node-version: [18.x, 20.x]
+        antora-version: ['~3.1', '3.2.0-alpha.8']
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/test-asciidoctor.yml b/.github/workflows/test-asciidoctor.yml
index 8b3286d..46b6cfc 100644
--- a/.github/workflows/test-asciidoctor.yml
+++ b/.github/workflows/test-asciidoctor.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [16.x, 18.x, 20.x]
+        node-version: [18.x, 20.x]
         asciidoctor-version: ['~2.2', '~3.0']
 
     steps: