diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0dcf648da..fe7b1fe48 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -227,14 +227,14 @@ jobs:
           command: |
             cd src/js
             npx tsd
-            npm install
+            npm ci
             npm test
       - run:     
           name: check if webpack cli works well with load-pyodide.js
           command: | 
             git clone https://github.com/pyodide/pyodide-webpack-example.git
             cd pyodide-webpack-example
-            npm install     
+            npm ci     
             cp ../src/js/load-pyodide.js node_modules/pyodide/load-pyodide.js                  
             head -20 node_modules/pyodide/load-pyodide.js
             npx webpack
diff --git a/Makefile b/Makefile
index 7fcb5999b..854b96594 100644
--- a/Makefile
+++ b/Makefile
@@ -67,8 +67,8 @@ env:
 	env
 
 
-node_modules/.installed : src/js/package.json
-	cd src/js && npm install --save-dev
+node_modules/.installed : src/js/package.json src/js/package-lock.json
+	cd src/js && npm ci
 	ln -sfn src/js/node_modules/ node_modules
 	touch node_modules/.installed