diff --git a/build.zig b/build.zig
index d0e7a52..3df9378 100644
--- a/build.zig
+++ b/build.zig
@@ -302,6 +302,8 @@ pub fn emLinkStep(b: *Build, options: EmLinkOptions) !*Build.Step.Run {
     try emcc_cmd.append(emcc_path);
     if (options.optimize == .Debug) {
         try emcc_cmd.append("-Og");
+        try emcc_cmd.append("-sSAFE_HEAP=1");
+        try emcc_cmd.append("-sSTACK_OVERFLOW_CHECK=1");
     } else {
         try emcc_cmd.append("-sASSERTIONS=0");
         if (options.optimize == .ReleaseSmall) {
diff --git a/build.zig.zon b/build.zig.zon
index deacf66..693d32d 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -11,8 +11,8 @@
     },
     .dependencies = .{
         .emsdk = .{
-            .url = "git+https://github.com/emscripten-core/emsdk#0bbae74935d57ff41739648c12cf90b56668398f",
-            .hash = "1220f1340cd871b444021c600661f921f96091ce0815fa43008528f4844cece7e245",
+            .url = "git+https://github.com/emscripten-core/emsdk#c18280c8f3f8f088b4337f0f6a5fdb2be0d67179",
+            .hash = "12203d61e8947f25993a86b4d73e2d91b4c1d96f1aa07c581b7dffba7cb5ca91bc35",
         },
     },
 }
diff --git a/src/sokol/c/sokol_gfx.h b/src/sokol/c/sokol_gfx.h
index 1202033..f065c72 100644
--- a/src/sokol/c/sokol_gfx.h
+++ b/src/sokol/c/sokol_gfx.h
@@ -6476,8 +6476,13 @@ _SOKOL_PRIVATE void _sg_dummy_update_image(_sg_image_t* img, const sg_image_data
 // optional GL loader for win32
 #if defined(_SOKOL_USE_WIN32_GL_LOADER)
 
+#ifndef SG_GL_FUNCS_EXT
+#define SG_GL_FUNCS_EXT
+#endif
+
 // X Macro list of GL function names and signatures
 #define _SG_GL_FUNCS \
+    SG_GL_FUNCS_EXT \
     _SG_XMACRO(glBindVertexArray,                 void, (GLuint array)) \
     _SG_XMACRO(glFramebufferTextureLayer,         void, (GLenum target, GLenum attachment, GLuint texture, GLint level, GLint layer)) \
     _SG_XMACRO(glGenFramebuffers,                 void, (GLsizei n, GLuint * framebuffers)) \