diff --git a/.gitignore b/.gitignore
index 705b25b..36010d3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,5 @@ SOURCES/go1.19.4.tar.gz
 /go1.20.4-3-openssl-fips.tar.gz
 /go1.20.6.tar.gz
 /go1.20.6-1-openssl-fips.tar.gz
+/go1.21.3-1-openssl-fips.tar.gz
+/go1.21.3.tar.gz
diff --git a/golang.spec b/golang.spec
index b9b4823..d91fa82 100644
--- a/golang.spec
+++ b/golang.spec
@@ -91,13 +91,13 @@
 %global gohostarch  s390x
 %endif
 
-%global go_api 1.20
-%global version 1.20.6
+%global go_api 1.21
+%global version 1.21.3
 %global pkg_release 1
 
 Name:           golang
 Version:        %{version}
-Release:        2%{?dist}
+Release:        1%{?dist}
 
 Summary:        The Go Programming Language
 # source tree includes several copies of Mark.Twain-Tom.Sawyer.txt under Public Domain
@@ -519,6 +519,10 @@ cd ..
 %endif
 
 %changelog
+* Fri Oct 20 2023 Archana Ravindar <aravinda@redhat.com> - 1.21.3-1
+- Rebase Go to 1.21.3
+- Resolves: RHEL-12620
+
 * Mon Aug 14 2023 Alejandro Sáez <asm@redhat.com> - 1.20.6-2
 - Retire golang-race package
 - Resolves: rhbz#2230599
diff --git a/sources b/sources
index d98d526..7eb506d 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (go1.20.6.tar.gz) = 45990e2bb4ddf84646ecca5814a62b4330063188238b5ab3f9d47f517a227ea7a981fe3d50681f4187462d01d0c1601cb01375f940569a5465b78065a4371cd4
-SHA512 (go1.20.6-1-openssl-fips.tar.gz) = 7e1f9a61b8d419233b41d4592e8741a9d3039120c1fb444cfd7ac229d65a8031ecf1644e1161bc6cf5739ac7ec84e6405eb101f63b5a972ecb6b2ea69cea39e2
+SHA512 (go1.21.3-1-openssl-fips.tar.gz) = 869cd8d20ecd2c81ca4ae184fd1f73c124ee479334a002bda2135cb60ce919b0185f203f9d78f08c9616b32339f588aec6f9bc609d458e29dedcdab13dc985d3
+SHA512 (go1.21.3.tar.gz) = ad7976c4d31237c7aad7c0323390387db9d6800bd060debcd421f16d3b734276a159d4795e7cb8d9bd1e39358512293a11f0a35b0199f7113f28d25a20e20b0f