diff --git a/cmd/dep/ensure.go b/cmd/dep/ensure.go
index 63e4868ad7..18587be3bd 100644
--- a/cmd/dep/ensure.go
+++ b/cmd/dep/ensure.go
@@ -283,7 +283,7 @@ func (cmd *ensureCommand) runDefault(ctx *dep.Ctx, args []string, p *dep.Project
 		return errors.Wrap(err, "ensure Solve()")
 	}
 
-	vendorBehavior := dep.VendorOnChanged
+	vendorBehavior := dep.VendorAlways
 	if cmd.noVendor {
 		vendorBehavior = dep.VendorNever
 	}
@@ -378,7 +378,7 @@ func (cmd *ensureCommand) runUpdate(ctx *dep.Ctx, args []string, p *dep.Project,
 		return errors.Wrap(err, "ensure Solve()")
 	}
 
-	sw, err := dep.NewSafeWriter(nil, p.Lock, dep.LockFromSolution(solution), dep.VendorOnChanged)
+	sw, err := dep.NewSafeWriter(nil, p.Lock, dep.LockFromSolution(solution), dep.VendorAlways)
 	if err != nil {
 		return err
 	}
@@ -678,7 +678,7 @@ func (cmd *ensureCommand) runAdd(ctx *dep.Ctx, args []string, p *dep.Project, sm
 	}
 	sort.Strings(reqlist)
 
-	sw, err := dep.NewSafeWriter(nil, p.Lock, dep.LockFromSolution(solution), dep.VendorOnChanged)
+	sw, err := dep.NewSafeWriter(nil, p.Lock, dep.LockFromSolution(solution), dep.VendorAlways)
 	if err != nil {
 		return err
 	}