diff --git a/pkgs/by-name/li/libtommath/force_mp_set_double.patch b/pkgs/by-name/li/libtommath/force_mp_set_double.patch
new file mode 100644
index 000000000000..1517ca46dcd7
--- /dev/null
+++ b/pkgs/by-name/li/libtommath/force_mp_set_double.patch
@@ -0,0 +1,14 @@
+diff --git a/bn_mp_set_double.c b/bn_mp_set_double.c
+index a42fc70..4a13539 100644
+--- a/bn_mp_set_double.c
++++ b/bn_mp_set_double.c
+@@ -3,7 +3,8 @@
+ /* LibTomMath, multiple-precision integer library -- Tom St Denis */
+ /* SPDX-License-Identifier: Unlicense */
+ 
+-#if defined(__STDC_IEC_559__) || defined(__GCC_IEC_559)
++#if defined(__STDC_IEC_559__) || defined(__GCC_IEC_559) || \
++     (defined(__APPLE__) && defined(__aarch64__))
+ mp_err mp_set_double(mp_int *a, double b)
+ {
+    uint64_t frac;
diff --git a/pkgs/by-name/li/libtommath/package.nix b/pkgs/by-name/li/libtommath/package.nix
index 52580ffa819e..af133212172d 100644
--- a/pkgs/by-name/li/libtommath/package.nix
+++ b/pkgs/by-name/li/libtommath/package.nix
@@ -14,6 +14,10 @@ stdenv.mkDerivation (finalAttrs: {
     sha256 = "sha256-KWJy2TQ1mRMI63NgdgDANLVYgHoH6CnnURQuZcz6nQg=";
   };
 
+  patches = [
+    ./force_mp_set_double.patch
+  ];
+
   postPatch = ''
     substituteInPlace makefile.shared \
       --replace-fail glibtool libtool \