diff --git a/thirdparty/README.md b/thirdparty/README.md
index 9d7b4232a7..3dc744341b 100644
--- a/thirdparty/README.md
+++ b/thirdparty/README.md
@@ -426,7 +426,7 @@ Collection of single-file libraries used in Godot components.
   * License: Apache 2.0
 - `r128.h`
   * Upstream: https://github.com/fahickman/r128
-  * Version: git (423f693617faafd01de21e92818add4208eb8bd1, 2020)
+  * Version: 1.4.4 (cf2e88fc3e7d7dfe99189686f914874cd0bda15e, 2020)
   * License: Public Domain or Unlicense
 - `smaz.{c,h}`
   * Upstream: https://github.com/antirez/smaz
diff --git a/thirdparty/misc/r128.h b/thirdparty/misc/r128.h
index 1f7aab78fb..a345cc47ba 100644
--- a/thirdparty/misc/r128.h
+++ b/thirdparty/misc/r128.h
@@ -1,5 +1,5 @@
 /*
-r128.h: 128-bit (64.64) signed fixed-point arithmetic. Version 1.4.3
+r128.h: 128-bit (64.64) signed fixed-point arithmetic. Version 1.4.4
 
 COMPILATION
 -----------
@@ -76,8 +76,8 @@ OTHER DEALINGS IN THE SOFTWARE.
 #  include <stdint.h>
 #  define R128_S32 int32_t
 #  define R128_U32 uint32_t
-#  define R128_S64 int64_t
-#  define R128_U64 uint64_t
+#  define R128_S64 long long
+#  define R128_U64 unsigned long long
 #  define R128_LIT_S64(x) x##ll
 #  define R128_LIT_U64(x) x##ull
 #endif
@@ -701,7 +701,7 @@ static R128_U32 r128__udiv64(R128_U32 nlo, R128_U32 nhi, R128_U32 d, R128_U32 *r
    return (R128_U32)(n64 / d);
 #  endif
 }
-#elif !defined(_M_X64) || defined(R128_STDC_ONLY)
+#elif defined(R128_STDC_ONLY) || !R128_INTEL
 #define r128__umul64(a, b) ((a) * (R128_U64)(b))
 static R128_U32 r128__udiv64(R128_U32 nlo, R128_U32 nhi, R128_U32 d, R128_U32 *rem)
 {
@@ -799,7 +799,7 @@ static void r128__umul128(R128 *dst, R128_U64 a, R128_U64 b)
 // MSVC x64 provides neither inline assembly nor (pre-2019) a div intrinsic, so we do fake
 // "inline assembly" to avoid long division or outline assembly.
 #pragma code_seg(".text")
-__declspec(allocate(".text")) static const unsigned char r128__udiv128Code[] = {
+__declspec(allocate(".text") align(16)) static const unsigned char r128__udiv128Code[] = {
    0x48, 0x8B, 0xC1,       //mov  rax, rcx
    0x49, 0xF7, 0xF0,       //div  rax, r8
    0x49, 0x89, 0x11,       //mov  qword ptr [r9], rdx