diff --git a/.github/workflows/build_test_deploy-test.yml b/.github/workflows/build_test_deploy-test.yml
index 6e17e29..bf42d4f 100644
--- a/.github/workflows/build_test_deploy-test.yml
+++ b/.github/workflows/build_test_deploy-test.yml
@@ -18,7 +18,7 @@ jobs:
       
     strategy:
       matrix:
-        node-version: [20.x,]
+        node-version: [16.x,]
         # chrisbc: dropping 10.x as it's not supported by D3 , also 12.x, 14.x, 
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
diff --git a/.github/workflows/build_test_main.yml b/.github/workflows/build_test_main.yml
index 1147534..4dce7f3 100644
--- a/.github/workflows/build_test_main.yml
+++ b/.github/workflows/build_test_main.yml
@@ -18,7 +18,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [20.x,]
+        node-version: [16.x,]
         # chrisbc: dropping 10.x as it's not supported by D3 , also 12.x, 14.x, 
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
diff --git a/.github/workflows/deploy_main_to_s3.yml b/.github/workflows/deploy_main_to_s3.yml
index 3461e7c..a9eaf63 100644
--- a/.github/workflows/deploy_main_to_s3.yml
+++ b/.github/workflows/deploy_main_to_s3.yml
@@ -26,7 +26,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [20.x]
+        node-version: [16.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
diff --git a/.github/workflows/deploy_test_to_s3.yml b/.github/workflows/deploy_test_to_s3.yml
index 57d83a6..6a5c410 100644
--- a/.github/workflows/deploy_test_to_s3.yml
+++ b/.github/workflows/deploy_test_to_s3.yml
@@ -26,7 +26,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [20.x]
+        node-version: [16.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps: