diff --git a/buildkite/scripts/unit-test.sh b/buildkite/scripts/unit-test.sh
index de885193086..b38ad7d94a8 100755
--- a/buildkite/scripts/unit-test.sh
+++ b/buildkite/scripts/unit-test.sh
@@ -21,10 +21,10 @@ export LIBP2P_NIXLESS=1 PATH=/usr/lib/go/bin:$PATH GO=/usr/lib/go/bin/go
 time make build
 
 echo "--- Build all targets"
-dune build "${path}" --profile="${profile}" -j16
+dune build "${path}" --profile="${profile}" -j8
 
 echo "--- Check for changes to verification keys"
-time dune runtest "src/app/print_blockchain_snark_vk" --profile="${profile}" -j16
+time dune runtest "src/app/print_blockchain_snark_vk" --profile="${profile}" -j8
 
 # Turn on the proof-cache assertion, so that CI will fail if the proofs need to
 # be updated.
@@ -35,8 +35,8 @@ export ERROR_ON_PROOF=true
 # skip running all of the tests that have already succeeded, since dune will
 # only retry those tests that failed.
 echo "--- Run unit tests"
-time dune runtest "${path}" --profile="${profile}" -j16 || \
+time dune runtest "${path}" --profile="${profile}" -j8 || \
 (./scripts/link-coredumps.sh && \
  echo "--- Retrying failed unit tests" && \
- time dune runtest "${path}" --profile="${profile}" -j16 || \
+ time dune runtest "${path}" --profile="${profile}" -j8 || \
  (./scripts/link-coredumps.sh && false))