diff --git a/README.md b/README.md
index 322c0fe..524ca36 100644
--- a/README.md
+++ b/README.md
@@ -33,8 +33,8 @@ This is currently based on Packet Tracer 8.1.1 and is intended to track the late
 
     ```bash
     flatpak install \
-        org.freedesktop.Platform/x86_64/20.08 \
-        org.freedesktop.Sdk/x86_64/20.08
+        org.freedesktop.Platform/x86_64/21.08 \
+        org.freedesktop.Sdk/x86_64/21.08
     ```
 
 4. Download the official Deb package to the cloned repository (don't rename it).
@@ -45,7 +45,7 @@ This is currently based on Packet Tracer 8.1.1 and is intended to track the late
 
     ```bash
     cd com.cisco.PacketTracer
-    flatpak-builder --install build com.cisco.PacketTracer.yml
+    flatpak-builder --install --user build com.cisco.PacketTracer.yml
     ```
 
 ## Notes
diff --git a/check-updates.sh b/check-updates.sh
index f0261cf..efc60d5 100755
--- a/check-updates.sh
+++ b/check-updates.sh
@@ -7,7 +7,7 @@ set -o pipefail
 set -o nounset
 
 # The FAQ page says 8.1 but it's actually 8.1.1
-PREV_RELEASE="8.1"
+PREV_RELEASE="8.2"
 
 LATEST_RELEASE=$(curl --silent https://www.netacad.com/courses/packet-tracer/faq | \
     grep --only-matching --perl-regexp "What’s new in Cisco Packet Tracer (\d\.\d|\.\d)" | \
diff --git a/com.cisco.PacketTracer.yml b/com.cisco.PacketTracer.yml
index f10b364..b580f46 100644
--- a/com.cisco.PacketTracer.yml
+++ b/com.cisco.PacketTracer.yml
@@ -1,6 +1,6 @@
 app-id: com.cisco.PacketTracer
 runtime: org.freedesktop.Platform
-runtime-version: '20.08'
+runtime-version: '21.08'
 sdk: org.freedesktop.Sdk
 command: /app/pt/packettracer
 finish-args:
@@ -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_811_Ubuntu_64bit.deb
+      - ar x CiscoPacketTracer_820_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_811_Ubuntu_64bit.deb
-        sha256: 08c53171aa0257a64ae7de1540f242214033cfa4f879fbc9fed5cc0d32232abf
+        path: CiscoPacketTracer_820_Ubuntu_64bit.deb
+        sha256: 1b19885d59f6130ee55414fb02e211a1773460689db38bfd1ac7f0d45117ed16
       - type: file
         path: com.cisco.PacketTracer.appdata.xml
       - type: file