diff --git a/src/VkBootstrap.cpp b/src/VkBootstrap.cpp
index 7c9f247..6bd5b67 100644
--- a/src/VkBootstrap.cpp
+++ b/src/VkBootstrap.cpp
@@ -406,6 +406,7 @@ detail::Expected<Instance, detail::Error<InstanceError>> InstanceBuilder::build
 		instance.headless = true;
 	}
 	instance.allocation_callbacks = info.allocation_callbacks;
+	instance.instance_version = info.api_version;
 	return instance;
 }
 
@@ -427,7 +428,7 @@ InstanceBuilder& InstanceBuilder::set_engine_version (uint32_t major, uint32_t m
 	info.engine_version = VK_MAKE_VERSION (major, minor, patch);
 	return *this;
 }
-InstanceBuilder& InstanceBuilder::set_api_version (uint32_t major, uint32_t minor, uint32_t patch) {
+InstanceBuilder& InstanceBuilder::require_api_version (uint32_t major, uint32_t minor, uint32_t patch) {
 	info.api_version = VK_MAKE_VERSION (major, minor, patch);
 	return *this;
 }
@@ -750,6 +751,7 @@ PhysicalDeviceSelector::PhysicalDeviceSelector (Instance const& instance) {
 	system_info.instance = instance.instance;
 	system_info.headless = instance.headless;
 	criteria.require_present = !instance.headless;
+	criteria.required_version = instance.instance_version;
 }
 
 detail::Expected<PhysicalDevice, detail::Error<PhysicalDeviceError>> PhysicalDeviceSelector::select () const {
diff --git a/src/VkBootstrap.h b/src/VkBootstrap.h
index d08ee06..e131975 100644
--- a/src/VkBootstrap.h
+++ b/src/VkBootstrap.h
@@ -159,6 +159,7 @@ struct Instance {
 
 	private:
 	bool headless = false;
+	uint32_t instance_version = VK_MAKE_VERSION (1, 0, 0);
 
 	friend class InstanceBuilder;
 	friend class PhysicalDeviceSelector;
@@ -182,8 +183,8 @@ class InstanceBuilder {
 	InstanceBuilder& set_app_version (uint32_t major, uint32_t minor, uint32_t patch);
 	// Sets the (major, minor, patch) version of the engine.
 	InstanceBuilder& set_engine_version (uint32_t major, uint32_t minor, uint32_t patch);
-	// Sets the vulkan API version to use.
-	InstanceBuilder& set_api_version (uint32_t major, uint32_t minor, uint32_t patch);
+	// Require a minimum vulkan instance API version.
+	InstanceBuilder& require_api_version (uint32_t major, uint32_t minor, uint32_t patch);
 
 	// Adds a layer to be enabled. Will fail to create an instance if the layer isn't available.
 	InstanceBuilder& enable_layer (const char* layer_name);
diff --git a/tests/run_tests.cpp b/tests/run_tests.cpp
index cff5ba8..fb76b63 100644
--- a/tests/run_tests.cpp
+++ b/tests/run_tests.cpp
@@ -55,7 +55,7 @@ int test_instance_basic () {
 		        printf ("[%s: %s](user defined)\n%s\n", ms, mt, pCallbackData->pMessage);
 		        return VK_FALSE;
 	        })
-	        .set_api_version (1, 2, 111)
+	        .require_api_version (1, 2, 111)
 	        .build ();
 	if (!instance_ret.has_value ()) {
 		return 1;
@@ -76,7 +76,7 @@ int test_instance_headless () {
 	        .set_app_version (4, 5, 6)
 	        .set_app_name ("headless")
 	        .set_engine_name ("nick")
-	        .set_api_version (1, 0, 34)
+	        .require_api_version (1, 0, 34)
 	        .use_default_debug_messenger ()
 	        .add_validation_feature_enable (VkValidationFeatureEnableEXT::VK_VALIDATION_FEATURE_ENABLE_GPU_ASSISTED_EXT)
 	        .add_validation_feature_disable (VkValidationFeatureDisableEXT::VK_VALIDATION_FEATURE_DISABLE_OBJECT_LIFETIMES_EXT)