diff --git a/SPECS/lld.spec b/SPECS/lld.spec
index 9cd8071..6f10a7a 100644
--- a/SPECS/lld.spec
+++ b/SPECS/lld.spec
@@ -1,3 +1,7 @@
+%if 0%{?rhel}
+%undefine __cmake_in_source_build
+%endif
+
 #%%global rc_ver 5
 %global lld_srcdir lld-%{version}%{?rc_ver:rc%{rc_ver}}.src
 %global maj_ver 12
@@ -10,7 +14,7 @@
 
 Name:		lld
 Version:	%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:~rc%{rc_ver}}
-Release:	1%{?dist}
+Release:	1.1%{?dist}
 Summary:	The LLVM Linker
 
 License:	NCSA
@@ -36,6 +40,7 @@ BuildRequires:	llvm-devel = %{version}
 BuildRequires:	llvm-test = %{version}
 BuildRequires:	ncurses-devel
 BuildRequires:	zlib-devel
+BuildRequires:	python3-devel
 
 # For make check:
 BuildRequires:	python3-rpm-macros
@@ -202,6 +207,10 @@ fi
 %{_datadir}/lld/lit.lld-test.cfg.py
 
 %changelog
+* Sun May 09 2021 Davide Cavalca <dcavalca@fb.com> - 12.0.0-1.1
+- Add build fixes for CentOS Stream
+- Add missing BuildRequires for python3-devel
+
 * Fri Apr 16 2021 Tom Stellard <tstellar@redhat.com> - 12.0.0-1
 - 12.0.0 Release