diff --git a/graphics/vulkan-loader/Makefile b/graphics/vulkan-loader/Makefile
index 4fe5bbb8e4ef..c0abfe6f6cf9 100644
--- a/graphics/vulkan-loader/Makefile
+++ b/graphics/vulkan-loader/Makefile
@@ -1,42 +1,41 @@
 PORTNAME=	vulkan-loader
 DISTVERSIONPREFIX=	v
-DISTVERSION=	1.2.176
-PORTREVISION=	1
+DISTVERSION=	1.2.177
 CATEGORIES=	graphics devel
 
 MAINTAINER=	jbeich@FreeBSD.org
 COMMENT=	Driver loader for the Vulkan graphics API
 
 LICENSE=	APACHE20
 
 BUILD_DEPENDS=	vulkan-headers>0:graphics/vulkan-headers
 
 USES=		cmake compiler:${ARCH:Mi386:C/.+/gcc-/}c++11-lib pkgconfig python:3.4+,build
 USE_GITHUB=	yes
 USE_LDCONFIG=	yes
 GH_ACCOUNT=	KhronosGroup
 GH_PROJECT=	Vulkan-Loader
 CMAKE_ON=	CMAKE_SKIP_RPATH
 CMAKE_OFF=	BUILD_TESTS
 
 OPTIONS_DEFINE=	WAYLAND XCB XLIB
 OPTIONS_DEFAULT=WAYLAND XCB XLIB
 
 WAYLAND_LIB_DEPENDS=	libwayland-client.so:graphics/wayland
 WAYLAND_CMAKE_BOOL=	BUILD_WSI_WAYLAND_SUPPORT
 
 XCB_DESC=		${X11_DESC} via libxcb
 XCB_USES=		xorg
 XCB_USE=		XORG=xcb
 XCB_CMAKE_BOOL=		BUILD_WSI_XCB_SUPPORT
 
 XLIB_DESC=		${X11_DESC} via libX11
 XLIB_USES=		xorg
 XLIB_USE=		XORG=x11,xrandr
 XLIB_CMAKE_BOOL=	BUILD_WSI_XLIB_SUPPORT
 
 post-patch:
 # _XOPEN_SOURCE enforces X/Open-compliance but alloca isn't there
 	@${REINPLACE_CMD} '/_XOPEN_SOURCE/d' ${WRKSRC}/loader/CMakeLists.txt
 
 .include <bsd.port.mk>
diff --git a/graphics/vulkan-loader/distinfo b/graphics/vulkan-loader/distinfo
index 329a96075fbf..b8fba6fc8e49 100644
--- a/graphics/vulkan-loader/distinfo
+++ b/graphics/vulkan-loader/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1618937105
-SHA256 (KhronosGroup-Vulkan-Loader-v1.2.176_GH0.tar.gz) = 9a7cf743bea8bfc7bd8c0527079eea122a95cd2baaf61d1c8589168670e4a152
-SIZE (KhronosGroup-Vulkan-Loader-v1.2.176_GH0.tar.gz) = 1430058
+TIMESTAMP = 1619718598
+SHA256 (KhronosGroup-Vulkan-Loader-v1.2.177_GH0.tar.gz) = 3f02056f261efaf3d0d96dc1ca22b272baea2263c138c72a77c70515ba155857
+SIZE (KhronosGroup-Vulkan-Loader-v1.2.177_GH0.tar.gz) = 1430268
diff --git a/graphics/vulkan-loader/files/patch-loader_loader.c b/graphics/vulkan-loader/files/patch-loader_loader.c
index 30b588023daa..efbe9d26058e 100644
--- a/graphics/vulkan-loader/files/patch-loader_loader.c
+++ b/graphics/vulkan-loader/files/patch-loader_loader.c
@@ -1,20 +1,20 @@
---- loader/loader.c.orig	2021-04-20 16:45:05 UTC
+--- loader/loader.c.orig	2021-04-29 17:49:58 UTC
 +++ loader/loader.c
 @@ -253,7 +253,7 @@ void *loader_device_heap_realloc(const struct loader_d
  }
  
  // Environment variables
 -#if defined(__linux__) || defined(__APPLE__) || defined(__Fuchsia__) || defined(__QNXNTO__)
 +#if defined(__unix__) || defined(__APPLE__) || defined(__Fuchsia__) || defined(__QNXNTO__)
  
  static inline bool IsHighIntegrity() {
      return geteuid() != getuid() || getegid() != getgid();
-@@ -268,7 +268,7 @@ static inline char *loader_getenv(const char *name, co
+@@ -267,7 +267,7 @@ static inline char *loader_getenv(const char *name, co
+ }
  
  static inline char *loader_secure_getenv(const char *name, const struct loader_instance *inst) {
-     char *out;
 -#if defined(__APPLE__)
 +#if !defined(__linux__)
      // Apple does not appear to have a secure getenv implementation.
      // The main difference between secure getenv and getenv is that secure getenv
      // returns NULL if the process is being run with elevated privileges by a normal user.