diff --git a/contrib/src/gmp/SHA512SUMS b/contrib/src/gmp/SHA512SUMS
index 5369c0c645e14a24f313c0e6ca858a9daa7da1ed..42e59c4965eb67f1417cfff53a8231c03a126edd 100644
--- a/contrib/src/gmp/SHA512SUMS
+++ b/contrib/src/gmp/SHA512SUMS
@@ -1,2 +1 @@
-8904334a3bcc5c896ececabc75cda9dec642e401fb5397c4992c4fabea5e962c9ce8bd44e8e4233c34e55c8010cc28db0545f5f750cbdbb5f00af538dc763be9  gmp-6.2.1.tar.bz2
-e16b5b46d66872270e6987318172c3457ba008e4f21c7622e774b418769dd9a3a9a4521d4bfc61de239e55c5f810c057ec9dacc01a42dbece064d8c5c9a2650a  gmp-6.2.99-20221117121717.tar.bz2
+3b684c9bcb9ede2b7e54d0ba4c9764bfa17c20d4f3000017c553b6f1e135b536949580ff37341680c25dc236cfe0ba1db8cfdfe619ce013656189ef0871b89f8  gmp-6.3.0.tar.bz2
diff --git a/contrib/src/gmp/rules.mak b/contrib/src/gmp/rules.mak
index e9f0de97da0d164b8394e025688c0e87e22aa4cd..521a026db6d3c34a9bbb01909ca21c89b5cdcbb2 100644
--- a/contrib/src/gmp/rules.mak
+++ b/contrib/src/gmp/rules.mak
@@ -1,18 +1,8 @@
 # GNU Multiple Precision Arithmetic
 
 
-ifdef HAVE_MACOSX
-ifeq ($(ARCH),arm64)
-GMP_VERSION := 6.2.99-20221117121717
-GMP_URL := https://gmplib.org/download/snapshot/gmp-next/gmp-$(GMP_VERSION).tar.zst
-else
-GMP_VERSION := 6.2.1
-GMP_URL := $(GNU)/gmp/gmp-$(GMP_VERSION).tar.bz2
-endif
-else
-GMP_VERSION := 6.2.1
+GMP_VERSION := 6.3.0
 GMP_URL := $(GNU)/gmp/gmp-$(GMP_VERSION).tar.bz2
-endif
 
 $(TARBALLS)/gmp-$(GMP_VERSION).tar.bz2:
 	$(call download,$(GMP_URL))