diff --git a/eng/testing/RunnerTemplate.sh b/eng/testing/RunnerTemplate.sh
index bfaa743ef6f414f23aa8f022fec2aadebdd079d3..0fb8260a0b9bcdf6eb64f00836bb3b0c2f5935a6 100644
--- a/eng/testing/RunnerTemplate.sh
+++ b/eng/testing/RunnerTemplate.sh
@@ -132,7 +132,8 @@ if [[ "$(uname -s)" == "Darwin" ]]; then
   # files already in /cores/ at this point. This is being done to prevent
   # inadvertently flooding the CI machines with dumps.
   if [[ ! -d "/cores" || ! "$(ls -A /cores)" ]]; then
-    ulimit -c unlimited
+    # FIXME: temporarily disable core dumps
+    ulimit -c 0
   fi
 
 elif [[ "$(uname -s)" == "Linux" ]]; then