diff --git a/ports/glog/glog_disable_debug_postfix.patch b/ports/glog/glog_disable_debug_postfix.patch
index 7b882e1faf6917..ee7221195e6f31 100644
--- a/ports/glog/glog_disable_debug_postfix.patch
+++ b/ports/glog/glog_disable_debug_postfix.patch
@@ -2,12 +2,12 @@ diff --git a/CMakeLists.txt b/CMakeLists.txt
 index 808330e..de0e477 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -44,7 +44,7 @@ include (CTest)
- include (DetermineGflagsNamespace)
+@@ -65,7 +65,7 @@ include (GenerateExportHeader)
+ include (GetCacheVariables)
  include (GNUInstallDirs)
  
 -set (CMAKE_DEBUG_POSTFIX d)
 +#set (CMAKE_DEBUG_POSTFIX d)
  set (CMAKE_THREAD_PREFER_PTHREAD 1)
  
- if (WITH_GFLAGS)
+ find_package (GTest)
diff --git a/ports/glog/glog_fix_os_defines.patch b/ports/glog/glog_fix_os_defines.patch
new file mode 100644
index 00000000000000..be937fc86f392c
--- /dev/null
+++ b/ports/glog/glog_fix_os_defines.patch
@@ -0,0 +1,29 @@
+diff --git a/src/glog/logging.h.in b/src/glog/logging.h.in
+--- a/src/glog/logging.h.in
++++ b/src/glog/logging.h.in
+@@ -61,6 +61,25 @@
+ #if @ac_cv_have_glog_export@
+ #include "glog/export.h"
+ #endif
++
++// definitions from utilities.h which are needed by glog/logging.h
++#if (defined(WIN32) || defined(_WIN32) || defined(__WIN32__)) && !defined(OS_WINDOWS)
++# define OS_WINDOWS
++#elif (defined(__CYGWIN__) || defined(__CYGWIN32__)) && !defined(OS_CYGWIN)
++# define OS_CYGWIN
++#elif (defined(linux) || defined(__linux) || defined(__linux__)) && !defined(OS_LINUX)
++# define OS_LINUX
++#elif (defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)) && !defined(OS_MACOSX)
++# define OS_MACOSX
++#elif defined(__FreeBSD__) && !defined(OS_FREEBSD)
++# define OS_FREEBSD
++#elif defined(__NetBSD__) && !defined(OS_NETBSD)
++# define OS_NETBSD
++#elif defined(__OpenBSD__) && !defined(OS_OPENBSD)
++# define OS_OPENBSD
++#else
++// TODO(hamaji): Add other platforms.
++#endif
+ 
+ // Annoying stuff for windows -- makes sure clients can import these functions
+ #ifndef GOOGLE_GLOG_DLL_DECL
diff --git a/ports/glog/portfile.cmake b/ports/glog/portfile.cmake
index 8487cc19219055..ff77d8bd8261b8 100644
--- a/ports/glog/portfile.cmake
+++ b/ports/glog/portfile.cmake
@@ -1,11 +1,12 @@
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO google/glog
-    REF v0.4.0
-    SHA512 b585f1819ade2075f6b61dc5aaca5c3f9d25601dba2bd08b6c49b96ac5f79db23c6b7f2042df003f7130497dd7241fcaa8b107d1f97385cb66ce52d3c554b176
+    REF v0.5.0
+    SHA512 445E4338F3D81CD0B065F2DA9C6CE343C243263CA144CEA424EF97531A4E9E09C06FFD6942AC01C5213A8003C75CFBBEDE3C4028D12F0134F23FF29314769C1A
     HEAD_REF master
     PATCHES
        glog_disable_debug_postfix.patch
+       glog_fix_os_defines.patch
 )
 
 vcpkg_configure_cmake(
@@ -20,6 +21,7 @@ vcpkg_install_cmake()
 vcpkg_fixup_cmake_targets(CONFIG_PATH lib/cmake/glog)
 
 file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include)
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/share)
 
 vcpkg_copy_pdbs()
 
diff --git a/ports/glog/vcpkg.json b/ports/glog/vcpkg.json
index 6a0da077d82841..5bffeac557b0a4 100644
--- a/ports/glog/vcpkg.json
+++ b/ports/glog/vcpkg.json
@@ -1,7 +1,6 @@
 {
   "name": "glog",
-  "version-string": "0.4.0",
-  "port-version": 4,
+  "version": "0.5.0",
   "description": "C++ implementation of the Google logging module",
   "homepage": "https://github.com/google/glog",
   "dependencies": [
diff --git a/versions/baseline.json b/versions/baseline.json
index 857ce7a8e40caa..5ec70c22cd3555 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -2441,8 +2441,8 @@
       "port-version": 4
     },
     "glog": {
-      "baseline": "0.4.0",
-      "port-version": 4
+      "baseline": "0.5.0",
+      "port-version": 0
     },
     "gloo": {
       "baseline": "20201203",
diff --git a/versions/g-/glog.json b/versions/g-/glog.json
index 8a105b070e2cda..7560d339a947e3 100644
--- a/versions/g-/glog.json
+++ b/versions/g-/glog.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "efa371c3421ffdefd59df747651a54b7f7a8ad83",
+      "version": "0.5.0",
+      "port-version": 0
+    },
     {
       "git-tree": "27503732c21f2d6652d12d62b1e9c180c1d33c47",
       "version-string": "0.4.0",