diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index 2e5b2d0756..17c89e82b2 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -40,7 +40,7 @@ GCC_VERSION=8.3.0
 GCC_AUTOCONF_VERSION=2.69
 BINUTILS_VERSION=2.33.1
 GDB_VERSION=9.2
-IASL_VERSION=20200110
+IASL_VERSION=20200528
 PYTHON_VERSION=3.8.1
 EXPAT_VERSION=2.2.9
 # CLANG version number
@@ -843,9 +843,9 @@ build_IASL() {
 	test "$UNAME" = "Cygwin" && HOST="_CYGWIN"
 	HOST="$HOST" CFLAGS="$CFLAGS" \
 	OPT_CFLAGS="-O -D_FORTIFY_SOURCE=2 -D COREBOOT_TOOLCHAIN_VERSION='\"coreboot toolchain v$CROSSGCC_VERSION $CROSSGCC_DATE\"' " \
-	$MAKE $JOBS CC="$(hostcc host)" iasl acpibin acpidump acpiexec acpihelp acpinames acpisrc acpixtract
-	rm -f "$DESTDIR$TARGETDIR/bin/{iasl,acpibin,acpidump,acpiexec,acpihelp,acpinames,acpisrc,acpixtract}" || touch "$RDIR/.failed"
-	cp bin/{iasl,acpibin,acpidump,acpiexec,acpihelp,acpinames,acpisrc,acpixtract} "$DESTDIR$TARGETDIR/bin" || touch "$RDIR/.failed"
+	$MAKE $JOBS CC="$(hostcc host)" iasl acpibin acpidump acpiexec acpihelp acpisrc acpixtract
+	rm -f "$DESTDIR$TARGETDIR/bin/{iasl,acpibin,acpidump,acpiexec,acpihelp,acpisrc,acpixtract}" || touch "$RDIR/.failed"
+	cp bin/{iasl,acpibin,acpidump,acpiexec,acpihelp,acpisrc,acpixtract} "$DESTDIR$TARGETDIR/bin" || touch "$RDIR/.failed"
 }
 
 build_LLVM() {
diff --git a/util/crossgcc/patches/acpica-unix2-20200110_iasl.patch b/util/crossgcc/patches/acpica-unix2-20200528_iasl.patch
similarity index 73%
rename from util/crossgcc/patches/acpica-unix2-20200110_iasl.patch
rename to util/crossgcc/patches/acpica-unix2-20200528_iasl.patch
index 0f6097450b..3fac35d9d3 100644
--- a/util/crossgcc/patches/acpica-unix2-20200110_iasl.patch
+++ b/util/crossgcc/patches/acpica-unix2-20200528_iasl.patch
@@ -1,6 +1,6 @@
-diff -Naur acpica-unix2-20190703_/source/compiler/asloptions.c acpica-unix2-20190703/source/compiler/asloptions.c > acpica-unix2-20190703_iasl.patch
---- acpica-unix2-20190703_/source/compiler/asloptions.c
-+++ acpica-unix2-20190703/source/compiler/asloptions.c
+diff -Naur acpica-unix2-20200528_/source/compiler/asloptions.c acpica-unix2-20200528/source/compiler/asloptions.c > acpica-unix2-20200528_iasl.patch
+--- acpica-unix2-20200528_/source/compiler/asloptions.c
++++ acpica-unix2-20200528/source/compiler/asloptions.c
 @@ -126,6 +126,7 @@
      if (Gbl_DoSignon)
      {
diff --git a/util/crossgcc/sum/acpica-unix2-20200110.tar.gz.cksum b/util/crossgcc/sum/acpica-unix2-20200110.tar.gz.cksum
deleted file mode 100644
index 48c0a2f7b7..0000000000
--- a/util/crossgcc/sum/acpica-unix2-20200110.tar.gz.cksum
+++ /dev/null
@@ -1 +0,0 @@
-50c163d965aa2cbee9a3a5d9244d1a0d16c06ec0  tarballs/acpica-unix2-20200110.tar.gz
diff --git a/util/crossgcc/sum/acpica-unix2-20200528.tar.gz.cksum b/util/crossgcc/sum/acpica-unix2-20200528.tar.gz.cksum
new file mode 100644
index 0000000000..d2265e1869
--- /dev/null
+++ b/util/crossgcc/sum/acpica-unix2-20200528.tar.gz.cksum
@@ -0,0 +1 @@
+27afd4c05c966e9390fcc30bdf1f53ddb7d69033  tarballs/acpica-unix2-20200528.tar.gz