diff --git a/.gitignore b/.gitignore
index 24d5a7f..2a3b516 100644
--- a/.gitignore
+++ b/.gitignore
@@ -60,3 +60,5 @@
 /go1.20.6-1-openssl-fips.tar.gz
 /go1.20.8.tar.gz
 /go1.20.8-1-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 a92c999..a0fd03e 100644
--- a/golang.spec
+++ b/golang.spec
@@ -92,8 +92,8 @@
 %global gohostarch  s390x
 %endif
 
-%global go_api 1.20
-%global go_version 1.20.8
+%global go_api 1.21
+%global go_version 1.21.3
 %global version %{go_version}
 %global pkg_release 1
 
@@ -525,6 +525,10 @@ cd ..
 %files -n go-toolset
 
 %changelog
+* Fri Oct 20 2023 Archana Ravindar <aravinda@redhat.com> - 1.21.3-1
+- Rebase to Go 1.21.3
+- Resolves: RHEL-12624
+
 * Wed Sep 27 2023 Alejandro Sáez <asm@redhat.com> - 1.20.8-1
 - Rebase to Go 1.20.8
 - Remove fix-memory-leak-evp-sign-verify.patch as it is already included in the source
diff --git a/sources b/sources
index 5e61697..7eb506d 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (go1.20.8.tar.gz) = 4a5f916551ae3d243e6dc195c0f0b364c39db3888f1ebdcd3edde64c74a99a28d1d26a502d264d4757c12d2b79175a63e9985cbc7166848686374cf28f02c23e
-SHA512 (go1.20.8-1-openssl-fips.tar.gz) = 26bc4ebfa1fcc1504e99c971976fcb20f390e9245a56f15485da07c98d7813834bd036262e92e9e40977cfc304c183cc90ad6472323aefeddc0c76f2b8237aa4
+SHA512 (go1.21.3-1-openssl-fips.tar.gz) = 869cd8d20ecd2c81ca4ae184fd1f73c124ee479334a002bda2135cb60ce919b0185f203f9d78f08c9616b32339f588aec6f9bc609d458e29dedcdab13dc985d3
+SHA512 (go1.21.3.tar.gz) = ad7976c4d31237c7aad7c0323390387db9d6800bd060debcd421f16d3b734276a159d4795e7cb8d9bd1e39358512293a11f0a35b0199f7113f28d25a20e20b0f