diff --git a/thirdparty/README.md b/thirdparty/README.md
index 05b84ee733b..a8092f13cf6 100644
--- a/thirdparty/README.md
+++ b/thirdparty/README.md
@@ -811,7 +811,7 @@ comments and a patch is provided in the squish/ folder.
 ## tinyexr
 
 - Upstream: https://github.com/syoyo/tinyexr
-- Version: 1.0.5 (3627ab3060592468d49547b4cdf5353e9e2b50dc, 2023)
+- Version: 1.0.8 (6c8742cc8145c8f629698cd8248900990946d6b1, 2024)
 - License: BSD-3-Clause
 
 Files extracted from upstream source:
diff --git a/thirdparty/tinyexr/tinyexr.h b/thirdparty/tinyexr/tinyexr.h
index e5ac54a5068..d4001575370 100644
--- a/thirdparty/tinyexr/tinyexr.h
+++ b/thirdparty/tinyexr/tinyexr.h
@@ -386,7 +386,7 @@ extern int IsEXRFromMemory(const unsigned char *memory, size_t size);
 // error
 extern int SaveEXRToMemory(const float *data, const int width, const int height,
                    const int components, const int save_as_fp16,
-                   const unsigned char **buffer, const char **err);
+                   unsigned char **buffer, const char **err);
 
 // @deprecated { Not recommended, but handy to use. }
 // Saves single-frame OpenEXR image to a buffer. Assume EXR image contains RGB(A) channels.
@@ -780,7 +780,7 @@ static void cpy2(unsigned short *dst_val, const unsigned short *src_val) {
 }
 
 static void swap2(unsigned short *val) {
-#ifdef TINYEXR_LITTLE_ENDIAN
+#if TINYEXR_LITTLE_ENDIAN
   (void)val;
 #else
   unsigned short tmp = *val;
@@ -839,7 +839,7 @@ static void cpy4(float *dst_val, const float *src_val) {
 #endif
 
 static void swap4(unsigned int *val) {
-#ifdef TINYEXR_LITTLE_ENDIAN
+#if TINYEXR_LITTLE_ENDIAN
   (void)val;
 #else
   unsigned int tmp = *val;
@@ -854,7 +854,7 @@ static void swap4(unsigned int *val) {
 }
 
 static void swap4(int *val) {
-#ifdef TINYEXR_LITTLE_ENDIAN
+#if TINYEXR_LITTLE_ENDIAN
   (void)val;
 #else
   int tmp = *val;
@@ -869,7 +869,7 @@ static void swap4(int *val) {
 }
 
 static void swap4(float *val) {
-#ifdef TINYEXR_LITTLE_ENDIAN
+#if TINYEXR_LITTLE_ENDIAN
   (void)val;
 #else
   float tmp = *val;
@@ -900,7 +900,7 @@ static void cpy8(tinyexr::tinyexr_uint64 *dst_val, const tinyexr::tinyexr_uint64
 #endif
 
 static void swap8(tinyexr::tinyexr_uint64 *val) {
-#ifdef TINYEXR_LITTLE_ENDIAN
+#if TINYEXR_LITTLE_ENDIAN
   (void)val;
 #else
   tinyexr::tinyexr_uint64 tmp = (*val);
@@ -9008,7 +9008,7 @@ int LoadEXRMultipartImageFromFile(EXRImage *exr_images,
 }
 
 int SaveEXRToMemory(const float *data, int width, int height, int components,
-            const int save_as_fp16, const unsigned char **outbuf, const char **err) {
+            const int save_as_fp16, unsigned char **outbuf, const char **err) {
 
   if ((components == 1) || components == 3 || components == 4) {
     // OK