diff --git a/.circleci/config.yml b/.circleci/config.yml
index b5566ef2..0f5454de 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -6,11 +6,13 @@ version: 2.1
 executors:
   node18:
     docker:
-      - image: cimg/node:18.0.0 # Latest 18.x
+      - image: cimg/node:18.0.0
     working_directory: ~/workspace
   node16:
     docker:
-      - image: cimg/node:16.14.2 # Latest 16.x
+      # Oldest version with reliable support for error cause property,
+      # which jasmine-npm uses.
+      - image: cimg/node:16.14.0
     working_directory: ~/workspace
 
 jobs:
diff --git a/README.md b/README.md
index 2d339867..a974d12f 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ Microsoft Edge) as well as Node.
 
 | Environment       | Supported versions |
 |-------------------|--------------------|
-| Node              | 16, 18             |
+| Node              | 16.14-16.19, 18    |
 | Safari            | 15-16              |
 | Chrome            | Evergreen          |
 | Firefox           | Evergreen, 102     |