diff --git a/.circleci/config.yml b/.circleci/config.yml
index d7d9e8dc3..8aae91f42 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -97,6 +97,11 @@ jobs:
             rm -rf cpython/{build,downloads}
             rm -rf emsdk/emsdk/binaryen
 
+      - run:
+          name: Zip build directory
+          command: |
+            tar cjf pyodide-build.tar.gz  build
+
       - persist_to_workspace:
           root: .
           paths:
@@ -105,6 +110,12 @@ jobs:
       - store_artifacts:
           path: /root/repo/build/
 
+      - store_artifacts:
+          path: /root/repo/pyodide-build.tar.gz
+
+      - store_artifacts:
+          path: /root/repo/packages/build-logs
+
   build-packages-no-numpy-dependents:
     <<: *defaults
     resource_class: large
@@ -149,9 +160,22 @@ jobs:
             - ./packages
             - ./build
 
+      - run:
+          name: Zip build directory
+          command: |
+            tar cjf pyodide-build.tar.gz  build
+
+      - persist_to_workspace:
+          root: .
+          paths:
+            - .
+
       - store_artifacts:
           path: /root/repo/build/
 
+      - store_artifacts:
+          path: /root/repo/pyodide-build.tar.gz
+
       - store_artifacts:
           path: /root/repo/packages/build-logs
 
@@ -193,6 +217,11 @@ jobs:
             - /root/.ccache
           key: -pkg-{{ checksum "Makefile.envs" }}-v20210911-
 
+      - run:
+          name: Zip build directory
+          command: |
+            tar cjf pyodide-build.tar.gz  build
+
       - persist_to_workspace:
           root: .
           paths:
@@ -202,6 +231,9 @@ jobs:
       - store_artifacts:
           path: /root/repo/build/
 
+      - store_artifacts:
+          path: /root/repo/pyodide-build.tar.gz
+
       - store_artifacts:
           path: /root/repo/packages/build-logs