diff --git a/.circleci/config.yml b/.circleci/config.yml
index f754a4b1..8ce924c0 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -16,14 +16,6 @@ executors:
     docker:
       - image: cimg/node:14.17.4 # Latest 14.x
     working_directory: ~/workspace
-  node12_latest:
-    docker:
-    - image: cimg/node:12.22.10 # Latest 12.x
-    working_directory: ~/workspace
-  node12_17:
-    docker:
-      - image: cimg/node:12.17.0 # Oldest version supported by Jasmine
-    working_directory: ~/workspace
 
 jobs:
   build:
@@ -103,12 +95,6 @@ workflows:
       - build:
           executor: node14
           name: build_node_14
-      - build:
-          executor: node12_latest
-          name: build_node_12_latest
-      - build:
-          executor: node12_17
-          name: build_node_12_17
       - test_node:
           executor: node18
           name: test_node_18
@@ -124,16 +110,6 @@ workflows:
           name: test_node_14
           requires:
              - build_node_14
-      - test_node:
-          executor: node12_latest
-          name: test_node_12_latest
-          requires:
-             - build_node_12_latest
-      - test_node:
-          executor: node12_17
-          name: test_node_12_17
-          requires:
-             - build_node_12_17
       - test_browsers:
           requires:
              - build_node_14
diff --git a/README.md b/README.md
index e1e27d09..9d243b50 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ Microsoft Edge) as well as Node.
 
 | Environment       | Supported versions |
 |-------------------|--------------------|
-| Node              | 12.17+, 14, 16, 18 |
+| Node              | 14, 16, 18         |
 | Safari            | 14-15              |
 | Chrome            | Evergreen          |
 | Firefox           | Evergreen, 91      |