diff --git a/buckifier/rocks_test_runner.sh b/buckifier/rocks_test_runner.sh
index 2ee216934d..e1f48a760d 100755
--- a/buckifier/rocks_test_runner.sh
+++ b/buckifier/rocks_test_runner.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Create a tmp directory for the test to use
 TEST_DIR=$(mktemp -d /dev/shm/fbcode_rocksdb_XXXXXXX)
 TEST_TMPDIR="$TEST_DIR" $@ && rm -rf "$TEST_DIR"
diff --git a/build_tools/cont_integration.sh b/build_tools/cont_integration.sh
index 4e1905e7e3..06f25c596e 100755
--- a/build_tools/cont_integration.sh
+++ b/build_tools/cont_integration.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright (c) 2016, Facebook. All rights reserved.
 #
diff --git a/build_tools/dockerbuild.sh b/build_tools/dockerbuild.sh
index 2685380bf1..02f6094428 100755
--- a/build_tools/dockerbuild.sh
+++ b/build_tools/dockerbuild.sh
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/usr/bin/env bash
 docker run -v $PWD:/rocks -w /rocks buildpack-deps make
diff --git a/build_tools/format-diff.sh b/build_tools/format-diff.sh
index 868452a92a..81221ed9a4 100755
--- a/build_tools/format-diff.sh
+++ b/build_tools/format-diff.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # If clang_format_diff.py command is not specfied, we assume we are able to
 # access directly without any path.
 if [ -z $CLANG_FORMAT_DIFF ]
diff --git a/build_tools/regression_build_test.sh b/build_tools/regression_build_test.sh
index 7658988210..6980633287 100755
--- a/build_tools/regression_build_test.sh
+++ b/build_tools/regression_build_test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
diff --git a/build_tools/rocksdb-lego-determinator b/build_tools/rocksdb-lego-determinator
index 09e79f376a..300a60aab9 100755
--- a/build_tools/rocksdb-lego-determinator
+++ b/build_tools/rocksdb-lego-determinator
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # This script is executed by Sandcastle
 # to determine next steps to run
 
diff --git a/coverage/coverage_test.sh b/coverage/coverage_test.sh
index 4d8052c9e4..6d87ae9086 100755
--- a/coverage/coverage_test.sh
+++ b/coverage/coverage_test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Exit on error.
 set -e
diff --git a/tools/benchmark.sh b/tools/benchmark.sh
index 46e1c6567d..1a2c38439c 100755
--- a/tools/benchmark.sh
+++ b/tools/benchmark.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # REQUIRE: db_bench binary exists in the current directory
 
 if [ $# -ne 1 ]; then
diff --git a/tools/benchmark_leveldb.sh b/tools/benchmark_leveldb.sh
index dce66d47ad..7769969809 100755
--- a/tools/benchmark_leveldb.sh
+++ b/tools/benchmark_leveldb.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # REQUIRE: db_bench binary exists in the current directory
 #
 # This should be used with the LevelDB fork listed here to use additional test options.
diff --git a/tools/check_format_compatible.sh b/tools/check_format_compatible.sh
index 2f3805e5ab..801648963e 100755
--- a/tools/check_format_compatible.sh
+++ b/tools/check_format_compatible.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # A shell script to load some pre generated data file to a DB using ldb tool
 # ./ldb needs to be avaible to be executed.
diff --git a/tools/dbench_monitor b/tools/dbench_monitor
index 10726dc232..d85f9d070c 100755
--- a/tools/dbench_monitor
+++ b/tools/dbench_monitor
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 #(c) 2004-present, Facebook Inc. All rights reserved.
 #
diff --git a/tools/generate_random_db.sh b/tools/generate_random_db.sh
index 28bdceb2ba..e10843bab8 100755
--- a/tools/generate_random_db.sh
+++ b/tools/generate_random_db.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # A shell script to load some pre generated data file to a DB using ldb tool
 # ./ldb needs to be avaible to be executed.
diff --git a/tools/pflag b/tools/pflag
index adfac23bc9..f3394a6664 100755
--- a/tools/pflag
+++ b/tools/pflag
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 #(c) 2004-present, Facebook, all rights reserved. 
 # See the LICENSE file for usage and distribution rights.
diff --git a/tools/rdb/rdb b/tools/rdb/rdb
index 82cd17fb7e..05da1158b8 100755
--- a/tools/rdb/rdb
+++ b/tools/rdb/rdb
@@ -1,3 +1,3 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 node -e "RDB = require('./build/Release/rdb').DBWrapper; console.log('Loaded rocksdb in variable RDB'); repl = require('repl').start('> ');"
diff --git a/tools/regression_test.sh b/tools/regression_test.sh
index 7801da14f0..58558bbe4a 100755
--- a/tools/regression_test.sh
+++ b/tools/regression_test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # The RocksDB regression test script.
 # REQUIREMENT: must be able to run make db_bench in the current directory
 #
diff --git a/tools/run_flash_bench.sh b/tools/run_flash_bench.sh
index 76c16bb595..4d9d0d5575 100755
--- a/tools/run_flash_bench.sh
+++ b/tools/run_flash_bench.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # REQUIRE: benchmark.sh exists in the current directory
 # After execution of this script, log files are generated in $output_dir.
 # report.txt provides a high level statistics
diff --git a/tools/run_leveldb.sh b/tools/run_leveldb.sh
index 884312e3db..de628c310c 100755
--- a/tools/run_leveldb.sh
+++ b/tools/run_leveldb.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # REQUIRE: benchmark_leveldb.sh exists in the current directory
 # After execution of this script, log files are generated in $output_dir.
 # report.txt provides a high level statistics
diff --git a/tools/verify_random_db.sh b/tools/verify_random_db.sh
index 8ff6a3fd18..7000f5a1aa 100755
--- a/tools/verify_random_db.sh
+++ b/tools/verify_random_db.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # A shell script to verify DB generated by generate_random_db.sh cannot opened and read correct data.
 # ./ldb needs to be avaible to be executed.