diff --git a/Documentation/releases/coreboot-4.22-relnotes.md b/Documentation/releases/coreboot-4.22-relnotes.md
index 025eaf8fc9..d7013b267d 100644
--- a/Documentation/releases/coreboot-4.22-relnotes.md
+++ b/Documentation/releases/coreboot-4.22-relnotes.md
@@ -21,7 +21,7 @@ Update this document with changes that should be in the release notes.
 
 ### Toolchain updates
 
-* To be filled in immediately before the release by the release team
+* Upgrade GMP from 6.2.1 to 6.3.0
 
 ### Additional coreboot changes
 
diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index 1abb4a901a..033aac0c7b 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -35,7 +35,7 @@ USE_COREBOOT_MIRROR=0
 COREBOOT_MIRROR_URL="https://www.coreboot.org/releases/crossgcc-sources"
 
 # GCC toolchain version numbers
-GMP_VERSION=6.2.1
+GMP_VERSION=6.3.0
 MPFR_VERSION=4.2.0
 MPC_VERSION=1.3.1
 GCC_VERSION=11.4.0
diff --git a/util/crossgcc/patches/gmp-6.2.1_generic-build.patch b/util/crossgcc/patches/gmp-6.3.0_generic-build.patch
similarity index 100%
rename from util/crossgcc/patches/gmp-6.2.1_generic-build.patch
rename to util/crossgcc/patches/gmp-6.3.0_generic-build.patch
diff --git a/util/crossgcc/sum/gmp-6.2.1.tar.xz.cksum b/util/crossgcc/sum/gmp-6.2.1.tar.xz.cksum
deleted file mode 100644
index 3ea4232e59..0000000000
--- a/util/crossgcc/sum/gmp-6.2.1.tar.xz.cksum
+++ /dev/null
@@ -1 +0,0 @@
-0578d48607ec0e272177d175fd1807c30b00fdf2  tarballs/gmp-6.2.1.tar.xz
diff --git a/util/crossgcc/sum/gmp-6.3.0.tar.xz.cksum b/util/crossgcc/sum/gmp-6.3.0.tar.xz.cksum
new file mode 100644
index 0000000000..56abf27a75
--- /dev/null
+++ b/util/crossgcc/sum/gmp-6.3.0.tar.xz.cksum
@@ -0,0 +1 @@
+b4043dd2964ab1a858109da85c44de224384f352  tarballs/gmp-6.3.0.tar.xz