diff --git a/.gitignore b/.gitignore
index af015cd..2ba7dd5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,4 @@
 /ispc-1.18.1.tar.gz
 /ispc-ec62d6c.tar.gz
 /ispc-1.19.0.tar.gz
+/ispc-1.21.0.tar.gz
diff --git a/ispc.spec b/ispc.spec
index c64eb65..634b13a 100644
--- a/ispc.spec
+++ b/ispc.spec
@@ -3,7 +3,7 @@
 %global shortcommit %(c=%{commit}; echo ${c:0:7})
 
 Name:		ispc
-Version:	1.19.0
+Version:	1.21.0
 %if %{with_snapshot}
 Release:	%autorelease -p -s 20230102git%{shortcommit}
 %else
@@ -34,17 +34,12 @@ BuildRequires:	pkgconfig(python3)
 %ifarch x86_64
 BuildRequires:	/usr/lib/crt1.o
 %endif
+BuildRequires:  pkgconfig(tbb)
 BuildRequires:	pkgconfig(zlib)
 
 # Upstream only supports these architectures
 ExclusiveArch:	x86_64 aarch64
 
-# Include missing #include <cstdint> from gcc 13
-# https://github.com/EttusResearch/uhd/pull/652
-%if 0%{?fedora} > 37
-Patch:		0001-ipsc-include-cstdint.patch 
-%endif
-
 %description
 A compiler for a variant of the C programming language, with extensions for
 "single program, multiple data" (SPMD) programming.
@@ -104,13 +99,13 @@ sed -i 's| -Werror ||g' CMakeLists.txt
 %license LICENSE.txt
 %{_bindir}/%{name}
 %{_bindir}/check_isa
-%{_libdir}/lib%{name}rt.so.1
-%{_libdir}/lib%{name}rt.so.%{version}
-
+%{_libdir}/lib%{name}rt.so.{1,%{version}}
+%{_libdir}/lib%{name}rt_device_cpu.so.{1,%{version}}
 %files devel
 %{_includedir}/%{name}rt/
 %{_libdir}/cmake/%{name}rt-%{version}/
 %{_libdir}/lib%{name}rt.so
+%{_libdir}/lib%{name}rt_device_cpu.so
 
 %files static
 %license LICENSE.txt
diff --git a/sources b/sources
index 8b9410f..edd314c 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (ispc-1.19.0.tar.gz) = 140f16bc0f9e0a94853b50a5433be9196ee09b6c70a1840d400d0d201143da8cb2b1b92a857acf5856ed3410bfffd17678eb1029996f9007fe947f5ac78bf1bb
+SHA512 (ispc-1.21.0.tar.gz) = 7b860c10c89d7187b990fc4d8e6e35cdce8f7fc787c07be178aa53ba751cfac1554a64ccc74d612f517b972b5f91c266d320183aabcfcb5103cdf58c8c8f4c59