diff --git a/.gitignore b/.gitignore
index 63fa280..e116872 100644
--- a/.gitignore
+++ b/.gitignore
@@ -151,3 +151,7 @@
 /clang-tools-extra-12.0.0rc2.src.tar.xz
 /clang-tools-extra-12.0.0rc2.src.tar.xz.sig
 /clang-12.0.0rc2.src.tar.xz.sig
+/clang-12.0.0rc3.src.tar.xz
+/clang-12.0.0rc3.src.tar.xz.sig
+/clang-tools-extra-12.0.0rc3.src.tar.xz
+/clang-tools-extra-12.0.0rc3.src.tar.xz.sig
diff --git a/clang.spec b/clang.spec
index 25fce61..e625cc1 100644
--- a/clang.spec
+++ b/clang.spec
@@ -3,8 +3,8 @@
 %global maj_ver 12
 %global min_ver 0
 %global patch_ver 0
-%global rc_ver 2
-%global baserelease 4
+%global rc_ver 3
+%global baserelease 5
 
 %global clang_tools_binaries \
 	%{_bindir}/clang-apply-replacements \
@@ -539,6 +539,9 @@ false
 
 %endif
 %changelog
+* Thu Mar 11 2021 sguelton@redhat.com - 12.0.0-0.5.rc3
+- LLVM 12.0.0 rc3
+
 * Tue Mar 09 2021 sguelton@redhat.com - 12.0.0-0.4.rc2
 - rebuilt
 
diff --git a/sources b/sources
index bd2b5f3..a053f3c 100644
--- a/sources
+++ b/sources
@@ -1,4 +1,4 @@
-SHA512 (clang-12.0.0rc2.src.tar.xz) = 4c63fd680f0e9257d7839a4b818bb9c2cf0bdce23292ce9bfcd8187513d176941cbed094d3bebf3d8ee7f60ad06b1af3c04db84e8b754ac95b76414db5b94770
-SHA512 (clang-tools-extra-12.0.0rc2.src.tar.xz) = d3826d72ea5290d64181b18989aba095456a9493781198aec097c9a63e591a2fbff66273856893d7f0eff37e1cd8499ed698b794f1a0ad2457d691d7b1c61e40
-SHA512 (clang-tools-extra-12.0.0rc2.src.tar.xz.sig) = da13f9a8ae2f84bb962c95c963fc82bf2016e76590da1c487705aa5a787e8540691e8dfaa3cd235cf1b6d43cf91180aa14f2b0c20ee3488c67c64a9ed1e6a02e
-SHA512 (clang-12.0.0rc2.src.tar.xz.sig) = 4694cc97dd1e6d8a3d0ed453ef59bacafe438287773295d7da164311d300841c489032a1cd188c37cce494ee09ffa792beb8d78152cd0a3e467f2669e025accf
+SHA512 (clang-12.0.0rc3.src.tar.xz) = 6cb43ae4b2fdacc96dd7068da6222996b697904ab589d809c4200bc3ccb369b41b4ac328a36984b66869ea2b21b9e96f7cd783bb20c728cca93a22ac9a8c4a8d
+SHA512 (clang-12.0.0rc3.src.tar.xz.sig) = c6fb4e9177464affe68029bb1c5ffa51a78b46b81cbd5f26ffbad63bc99447cd3259353163107e0404e19684304e1738aa4a3fce4899337f9ca39cdf295bbd68
+SHA512 (clang-tools-extra-12.0.0rc3.src.tar.xz) = 6cfe68d9558bf468cce36da9ff81100b083fea9d802218a41785d4c679217c7df19c7e2408b7d5889648ed61e5efd3e490049b85d4e305284e68db77bd7b2a93
+SHA512 (clang-tools-extra-12.0.0rc3.src.tar.xz.sig) = dc3a25ead0448e018cd83bf9b5c3ce0c0c9982838c17743fe3d2288f3bd02edc92c531ce41e4b5c5800ebb8c169714c4b4d25922ad01b5598ab217322885314b