diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index f1cf6bb8cf..5dac074a06 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -54,7 +54,7 @@ GCC_VERSION=8.3.0
 GCC_AUTOCONF_VERSION=2.69
 BINUTILS_VERSION=2.33.1
 GDB_VERSION=8.3.1
-IASL_VERSION=20191018
+IASL_VERSION=20190703
 PYTHON_VERSION=3.8.0
 EXPAT_VERSION=2.2.9
 # CLANG version number
diff --git a/util/crossgcc/patches/acpica-unix2-20191018_iasl.patch b/util/crossgcc/patches/acpica-unix2-20190703_iasl.patch
similarity index 100%
rename from util/crossgcc/patches/acpica-unix2-20191018_iasl.patch
rename to util/crossgcc/patches/acpica-unix2-20190703_iasl.patch
diff --git a/util/crossgcc/sum/acpica-unix2-20190703.tar.gz.cksum b/util/crossgcc/sum/acpica-unix2-20190703.tar.gz.cksum
new file mode 100644
index 0000000000..9a89796d53
--- /dev/null
+++ b/util/crossgcc/sum/acpica-unix2-20190703.tar.gz.cksum
@@ -0,0 +1 @@
+c5594944f933265a53695204a0672d0808e4a580  tarballs/acpica-unix2-20190703.tar.gz
diff --git a/util/crossgcc/sum/acpica-unix2-20191018.tar.gz.cksum b/util/crossgcc/sum/acpica-unix2-20191018.tar.gz.cksum
deleted file mode 100644
index 3df9d27cb3..0000000000
--- a/util/crossgcc/sum/acpica-unix2-20191018.tar.gz.cksum
+++ /dev/null
@@ -1 +0,0 @@
-792e2ec4dcd78646de8405578d28f7437aacf811  tarballs/acpica-unix2-20191018.tar.gz