diff --git a/.gitignore b/.gitignore
index d7da761..3837b42 100644
--- a/.gitignore
+++ b/.gitignore
@@ -65,3 +65,5 @@
 /lld-12.0.0rc2.src.tar.xz.sig
 /lld-12.0.0rc3.src.tar.xz
 /lld-12.0.0rc3.src.tar.xz.sig
+/lld-12.0.0rc4.src.tar.xz
+/lld-12.0.0rc4.src.tar.xz.sig
diff --git a/lld.spec b/lld.spec
index 89a24d8..2fc5fe2 100644
--- a/lld.spec
+++ b/lld.spec
@@ -1,5 +1,5 @@
-%global rc_ver 3
-%global baserelease 5
+%global rc_ver 4
+%global baserelease 6
 %global lld_srcdir lld-%{version}%{?rc_ver:rc%{rc_ver}}.src
 %global maj_ver 12
 %global min_ver 0
@@ -203,6 +203,9 @@ fi
 %{_datadir}/lld/lit.lld-test.cfg.py
 
 %changelog
+* Fri Apr 02 2021 sguelton@redhat.com - 12.0.0-0.6.rc4
+- New upstream release candidate
+
 * Wed Mar 31 2021 Jonathan Wakely <jwakely@redhat.com> - 12.0.0-0.5.rc3
 - Rebuilt for removed libstdc++ symbols (#1937698)
 
diff --git a/sources b/sources
index feabd55..8706f89 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (lld-12.0.0rc3.src.tar.xz) = 01ccf5bd205bab665a19fab747e9ff7731a13026d6f5b082881536288ec7ba192a9402924c7d4027c07c71a2e8d11ff2d1a02e45d62db1281a62464b39d83e74
-SHA512 (lld-12.0.0rc3.src.tar.xz.sig) = 19cf6094d7f80b49ae2a86e19b61ae708bd24aabbc15163acdd04e141fe6db4e8bae52a81c425d73fb8db4281bb77d975c15d595fc144a99e860e9a542c56004
+SHA512 (lld-12.0.0rc4.src.tar.xz) = 44dc70c909abad3cbc57e5421224ca33add7487691783661064c8decddae705dbdd77f2cb19c9c794cfc1f97b5903d5f35456f76718dfeeea796a9b1faefed21
+SHA512 (lld-12.0.0rc4.src.tar.xz.sig) = add84a16746374103c633ad555f91f2656169863528a59bad7242695a8f79073c6f2ae074f6398aad8f9dd09778f9d5e7db943a94610f8c7acc0e67fbbdd8ff7