diff --git a/yarn-project/.yarnrc.yml b/yarn-project/.yarnrc.yml
index 8aaa7608581e..a6b42f0c4ee0 100644
--- a/yarn-project/.yarnrc.yml
+++ b/yarn-project/.yarnrc.yml
@@ -10,4 +10,4 @@ nodeLinker: node-modules
 
 # Do not allow 'yarn install' on CI to format package.json files,
 # otherwise it will change their hash and bust the cache
-immutablePatterns: ['**/package.json']
+immutablePatterns: ['package.json', '*/package.json']
diff --git a/yarn-project/bootstrap.sh b/yarn-project/bootstrap.sh
index 3065370e0821..944c3b2a7da3 100755
--- a/yarn-project/bootstrap.sh
+++ b/yarn-project/bootstrap.sh
@@ -92,7 +92,7 @@ function build {
     # files to yarn immutablePatterns, so if they are also changed, this step will fail.
     denoise "retry yarn install --immutable"
   else
-    denoise "yarn install"
+    denoise "yarn install --no-immutable"
   fi
   denoise "compile_all"
   echo -e "${green}Yarn project successfully built!${reset}"