diff --git a/pkg/runner/expression.go b/pkg/runner/expression.go
index 757587d..3daf09f 100644
--- a/pkg/runner/expression.go
+++ b/pkg/runner/expression.go
@@ -343,8 +343,9 @@ func (sc *StepContext) vmInputs() func(*otto.Otto) {
 	}
 
 	for k, v := range sc.Step.With {
-		inputs[k] = v
+		inputs[k] = sc.RunContext.NewExpressionEvaluator().Interpolate(v)
 	}
+
 	return func(vm *otto.Otto) {
 		_ = vm.Set("inputs", inputs)
 	}
diff --git a/pkg/runner/step_context.go b/pkg/runner/step_context.go
index 8972ede..95bc10b 100644
--- a/pkg/runner/step_context.go
+++ b/pkg/runner/step_context.go
@@ -241,7 +241,7 @@ func (sc *StepContext) runUsesContainer() common.Executor {
 	step := sc.Step
 	return func(ctx context.Context) error {
 		image := strings.TrimPrefix(step.Uses, "docker://")
-		cmd := strings.Fields(step.With["args"])
+		cmd := strings.Fields(sc.RunContext.NewExpressionEvaluator().Interpolate(step.With["args"]))
 		entrypoint := strings.Fields(step.With["entrypoint"])
 		stepContainer := sc.newStepContainer(ctx, image, cmd, entrypoint)