diff --git a/.circleci/config.yml b/.circleci/config.yml
index c9b84cc30dae24..6abf94951e5f15 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -409,6 +409,11 @@ jobs:
       - run:
           name: Set USE_HERMES=1
           command: echo "export USE_HERMES=1" >> $BASH_ENV
+
+      - run:
+          name: Set BUILD_HERMES_SOURCE=1
+          command: echo "export BUILD_HERMES_SOURCE=1" >> $BASH_ENV
+
       - with_brew_cache_span:
           steps:
             - brew_install:
@@ -487,6 +492,10 @@ jobs:
           name: Set USE_HERMES=1
           command: echo "export USE_HERMES=1" >> $BASH_ENV
 
+      - run:
+          name: Set BUILD_HERMES_SOURCE=1
+          command: echo "export BUILD_HERMES_SOURCE=1" >> $BASH_ENV
+
       - run:
           name: Setup the CocoaPods environment
           command: bundle exec pod setup