diff --git a/com.cisco.PacketTracer.yml b/com.cisco.PacketTracer.yml
index b580f46..61296ec 100644
--- a/com.cisco.PacketTracer.yml
+++ b/com.cisco.PacketTracer.yml
@@ -17,7 +17,7 @@ modules:
     buildsystem: simple
     build-commands:
       - install -D com.cisco.PacketTracer.appdata.xml /app/share/metainfo/com.cisco.PacketTracer.appdata.xml
-      - ar x CiscoPacketTracer_820_Ubuntu_64bit.deb
+      - ar x CiscoPacketTracer_821_Ubuntu_64bit.deb
       - xz -d data.tar.xz
       - tar -xf data.tar
       - find opt/pt/saves opt/pt/templates opt/pt/templates/environments -type d -exec chmod 755 {} +
@@ -30,8 +30,8 @@ modules:
 
     sources:
       - type: file
-        path: CiscoPacketTracer_820_Ubuntu_64bit.deb
-        sha256: 1b19885d59f6130ee55414fb02e211a1773460689db38bfd1ac7f0d45117ed16
+        path: CiscoPacketTracer_821_Ubuntu_64bit.deb
+        sha256: 428338ac32a474d4c9e930433c202cfa5d7b24b9eca50165972f41eb484e07ba
       - type: file
         path: com.cisco.PacketTracer.appdata.xml
       - type: file