diff --git a/etc/set_up_workstation.sh b/etc/set_up_workstation.sh
index 5f34dca2977..9f9e7a1c800 100755
--- a/etc/set_up_workstation.sh
+++ b/etc/set_up_workstation.sh
@@ -1,3 +1,5 @@
+#! /bin/bash
+
 silent_grep() {
     command grep -q "$@" >/dev/null 2>&1
 }
diff --git a/evergreen/check_workstation_setup.sh b/evergreen/check_workstation_setup.sh
index 5ed2a5c124b..eb3a7f98b6d 100755
--- a/evergreen/check_workstation_setup.sh
+++ b/evergreen/check_workstation_setup.sh
@@ -1,3 +1,5 @@
+#! /bin/bash
+
 failed_setup=false
 
 source ~/.bashrc