diff --git a/spindle/engine/engine.go b/spindle/engine/engine.go
index 3339a3eb..8bd587ee 100644
--- a/spindle/engine/engine.go
+++ b/spindle/engine/engine.go
@@ -413,6 +413,9 @@ func hostConfig(wid models.WorkflowId) *container.HostConfig {
 				ReadOnly: false,
 				TmpfsOptions: &mount.TmpfsOptions{
 					Mode: 0o1777, // world-writeable sticky bit
+					Options: [][]string{
+						{"exec"},
+					},
 				},
 			},
 			{