diff --git a/src/cocoa_init.m b/src/cocoa_init.m
index ab46f565..f51dea19 100644
--- a/src/cocoa_init.m
+++ b/src/cocoa_init.m
@@ -585,7 +585,7 @@ void _glfwPlatformTerminate(void)
 
 const char* _glfwPlatformGetVersionString(void)
 {
-    return _GLFW_VERSION_NUMBER " Cocoa NSGL"
+    return _GLFW_VERSION_NUMBER " Cocoa NSGL EGL OSMesa"
 #if defined(_GLFW_BUILD_DLL)
         " dynamic"
 #endif
diff --git a/src/win32_init.c b/src/win32_init.c
index ff215f60..78592cce 100644
--- a/src/win32_init.c
+++ b/src/win32_init.c
@@ -612,7 +612,7 @@ void _glfwPlatformTerminate(void)
 
 const char* _glfwPlatformGetVersionString(void)
 {
-    return _GLFW_VERSION_NUMBER " Win32 WGL EGL"
+    return _GLFW_VERSION_NUMBER " Win32 WGL EGL OSMesa"
 #if defined(__MINGW32__)
         " MinGW"
 #elif defined(_MSC_VER)
diff --git a/src/wl_init.c b/src/wl_init.c
index 40993a04..8a6b918c 100644
--- a/src/wl_init.c
+++ b/src/wl_init.c
@@ -1306,7 +1306,7 @@ void _glfwPlatformTerminate(void)
 
 const char* _glfwPlatformGetVersionString(void)
 {
-    return _GLFW_VERSION_NUMBER " Wayland EGL"
+    return _GLFW_VERSION_NUMBER " Wayland EGL OSMesa"
 #if defined(_POSIX_TIMERS) && defined(_POSIX_MONOTONIC_CLOCK)
         " clock_gettime"
 #else
diff --git a/src/x11_init.c b/src/x11_init.c
index 6c951c04..6f05a1b1 100644
--- a/src/x11_init.c
+++ b/src/x11_init.c
@@ -1083,7 +1083,7 @@ void _glfwPlatformTerminate(void)
 
 const char* _glfwPlatformGetVersionString(void)
 {
-    return _GLFW_VERSION_NUMBER " X11 GLX EGL"
+    return _GLFW_VERSION_NUMBER " X11 GLX EGL OSMesa"
 #if defined(_POSIX_TIMERS) && defined(_POSIX_MONOTONIC_CLOCK)
         " clock_gettime"
 #else