diff --git a/.circleci/config.yml b/.circleci/config.yml
index c2b3e08aa38fe..a680a1c58ac2a 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -27,6 +27,7 @@ commands:
       - run:
           name: Set OCaml envs
           command: |
+            echo 'export PATH=/opt/homebrew/bin:"$PATH"' >> "$BASH_ENV"
             echo 'eval $(opam env)' >> "$BASH_ENV"
 
   setup_linux_env:
@@ -211,11 +212,12 @@ jobs:
       - run:
           name: Build example/prelude directory
           command: |
+            set -x
             cd examples/with_prelude
             /tmp/artifacts/buck2 init
             cp -r ../../prelude prelude
             # Additional setup for ocaml
-            source ./ocaml-setup.sh
+            ./ocaml-setup.sh
             /tmp/artifacts/buck2 build //... -v 2
             /tmp/artifacts/buck2 test //... -v 2
       - build_example_conan
@@ -252,7 +254,7 @@ jobs:
             /tmp/artifacts/buck2 init
             cp -r ../../prelude prelude
             # Additional setup for ocaml
-            source ./ocaml-setup.sh
+            ./ocaml-setup.sh
             /tmp/artifacts/buck2 build //... -v 2
             /tmp/artifacts/buck2 test //... -v 2
       - build_example_conan
diff --git a/examples/with_prelude/ocaml/ppx/BUCK b/examples/with_prelude/ocaml/ppx/BUCK
index 000b749610e4c..fc92b744f841d 100644
--- a/examples/with_prelude/ocaml/ppx/BUCK
+++ b/examples/with_prelude/ocaml/ppx/BUCK
@@ -15,6 +15,8 @@ ocaml_binary(
     srcs = ["ppx_driver.ml"],
     compiler_flags = [
         "-linkall",
+        "-cclib",
+        "-lzstd",
     ],
     deps = [
         ":ppx-record-selectors",