diff --git a/.allstar/binary_artifacts.yaml b/.allstar/binary_artifacts.yaml
index 56a21e753..32dccbc15 100644
--- a/.allstar/binary_artifacts.yaml
+++ b/.allstar/binary_artifacts.yaml
@@ -1,4 +1,4 @@
 # Exemption reason: The binaries in this repository are (parts of) it security challenges of the Google CTF (g.co/ctf).
 # Exemption timeframe: permanent
 optConfig:
-  optOut: true
+  optOut: false
diff --git a/2017/finals/2017-finals-re-corewars/Dockerfile b/2017/finals/2017-finals-re-corewars/Dockerfile
index 5d962e4ce..ef8d815af 100644
--- a/2017/finals/2017-finals-re-corewars/Dockerfile
+++ b/2017/finals/2017-finals-re-corewars/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:xenial-20201014
 
 COPY corewars /corewars
 RUN mkdir /warrior
diff --git a/2017/quals/2017-misc-mindreader/app/requirements.txt b/2017/quals/2017-misc-mindreader/app/requirements.txt
index 62c81c479..d6f61fd6b 100644
--- a/2017/quals/2017-misc-mindreader/app/requirements.txt
+++ b/2017/quals/2017-misc-mindreader/app/requirements.txt
@@ -1,3 +1,3 @@
-gunicorn==19.7.1
+gunicorn==22.0.0
 Flask==0.12.1
 gevent
diff --git a/2023/pwn-write-flag-where/solution/solve.py b/2023/pwn-write-flag-where/solution/solve.py
index 24b345b1e..59234cfff 100644
--- a/2023/pwn-write-flag-where/solution/solve.py
+++ b/2023/pwn-write-flag-where/solution/solve.py
@@ -28,5 +28,5 @@ def remote_write(r,address,length):
 binary_base = int(output.split(b"\n")[8].split(b'-')[0],16)
 
 print("Binary base",hex(binary_base))
-remote_write(r,binary_base + 0x2198, 126)
+remote_write(r,binary_base + 0x21E0, 126)
 print(r.recv())