diff --git a/.dotnet8.0.metadata b/.dotnet8.0.metadata
index a2d40d7..381dcd5 100644
--- a/.dotnet8.0.metadata
+++ b/.dotnet8.0.metadata
@@ -1 +1 @@
-028a6d278ee15a57ed5667f64ea7bf98e5af8332 SOURCES/dotnet-8.0.120.tar.gz
+ac4ab665e079dd1d43c7f5c0c6dc20bad8f7e6f4 SOURCES/dotnet-8.0.121.tar.gz
diff --git a/.gitignore b/.gitignore
index 06f753f..a4c2104 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-SOURCES/dotnet-8.0.120.tar.gz
+SOURCES/dotnet-8.0.121.tar.gz
diff --git a/SOURCES/dotnet-8.0.120.tar.gz.sig b/SOURCES/dotnet-8.0.120.tar.gz.sig
deleted file mode 100644
index c5941dd..0000000
--- a/SOURCES/dotnet-8.0.120.tar.gz.sig
+++ /dev/null
@@ -1,17 +0,0 @@
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diff --git a/SOURCES/dotnet-8.0.121.tar.gz.sig b/SOURCES/dotnet-8.0.121.tar.gz.sig
new file mode 100644
index 0000000..8459728
--- /dev/null
+++ b/SOURCES/dotnet-8.0.121.tar.gz.sig
@@ -0,0 +1,17 @@
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diff --git a/SOURCES/release.json b/SOURCES/release.json
index adbe233..9ed73aa 100644
--- a/SOURCES/release.json
+++ b/SOURCES/release.json
@@ -1,10 +1,10 @@
 {
-  "release": "8.0.19",
+  "release": "8.0.21",
   "channel": "8.0",
-  "tag": "v8.0.120",
-  "sdkVersion": "8.0.120",
-  "runtimeVersion": "8.0.20",
-  "aspNetCoreVersion": "8.0.20",
+  "tag": "v8.0.121",
+  "sdkVersion": "8.0.121",
+  "runtimeVersion": "8.0.21",
+  "aspNetCoreVersion": "8.0.21",
   "sourceRepository": "https://github.com/dotnet/dotnet",
-  "sourceVersion": "6825a8d5c72c1893049c2c5ffa491b65cbcea7e0"
+  "sourceVersion": "eed318ae2d2a3b35d344b9ec73c361265a938310"
 }
diff --git a/SPECS/dotnet8.0.spec b/SPECS/dotnet8.0.spec
index 35cf1ed..1faf35e 100644
--- a/SPECS/dotnet8.0.spec
+++ b/SPECS/dotnet8.0.spec
@@ -12,10 +12,10 @@
 # dotnet-host and netstandard-targeting-pack-2.1
 %global is_latest_dotnet 0
 
-%global host_version 8.0.20
-%global runtime_version 8.0.20
+%global host_version 8.0.21
+%global runtime_version 8.0.21
 %global aspnetcore_runtime_version %{runtime_version}
-%global sdk_version 8.0.120
+%global sdk_version 8.0.121
 %global sdk_feature_band_version %(echo %{sdk_version} | cut -d '-' -f 1 | sed -e 's|[[:digit:]][[:digit:]]$|00|')
 %global templates_version %{runtime_version}
 #%%global templates_version %%(echo %%{runtime_version} | awk 'BEGIN { FS="."; OFS="." } {print $1, $2, $3+1 }')
@@ -739,6 +739,10 @@ export COMPlus_LTTng=0
 
 
 %changelog
+* Sun Oct 05 2025 Omair Majid <omajid@redhat.com> - 8.0.121-1
+- Update to .NET SDK 8.0.121 and Runtime 8.0.21
+- Resolves: RHEL-116866
+
 * Tue Sep 02 2025 Omair Majid <omajid@redhat.com> - 8.0.120-1
 - Update to .NET SDK 8.0.120 and Runtime 8.0.20
 - Resolves: RHEL-112259