diff --git a/dev/conbench_envs/benchmarks.env b/dev/conbench_envs/benchmarks.env
index 3af29491a8345..7bb2d8e292382 100644
--- a/dev/conbench_envs/benchmarks.env
+++ b/dev/conbench_envs/benchmarks.env
@@ -21,7 +21,7 @@ ARROW_BUILD_BENCHMARKS_REFERENCE=OFF
 ARROW_BUILD_TYPE=release
 ARROW_DEPENDENCY_SOURCE=AUTO
 ARROW_DATASET=ON
-ARROW_DEFAULT_MEMORY_POOL=mimalloc
+ARROW_DEFAULT_MEMORY_POOL=jemalloc
 ARROW_ENABLE_UNSAFE_MEMORY_ACCESS=true
 ARROW_ENABLE_NULL_CHECK_FOR_GET=false
 ARROW_FLIGHT=OFF
@@ -29,8 +29,8 @@ ARROW_GANDIVA=OFF
 ARROW_HDFS=ON
 ARROW_HOME=$CONDA_PREFIX
 ARROW_INSTALL_NAME_RPATH=ON
-ARROW_JEMALLOC=OFF
-ARROW_MIMALLOC=ON
+ARROW_JEMALLOC=ON
+ARROW_MIMALLOC=OFF
 ARROW_ORC=ON
 ARROW_PARQUET=ON
 ARROW_PYTHON=ON