diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b4ee06799b..b2afa2550f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -6,7 +6,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
 
     steps:
       - uses: actions/checkout@v2
diff --git a/Dockerfile b/Dockerfile
index 1b2624a7f1..ae61a90a76 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,7 @@
 # syntax=docker/dockerfile:1
 FROM ubuntu:20.04
 
-RUN apt-get update
-RUN apt-get install -y \
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
     build-essential \
     cgroup-lite \
     cppreference-doc-en-html \
diff --git a/cms/grading/Sandbox.py b/cms/grading/Sandbox.py
index 741b68dad7..5ec85d3e7c 100644
--- a/cms/grading/Sandbox.py
+++ b/cms/grading/Sandbox.py
@@ -1076,7 +1076,7 @@ def build_box_options(self):
         if self.box_id is not None:
             res += ["--box-id=%d" % self.box_id]
         if self.cgroup:
-            res += ["--cg", "--cg-timing"]
+            res += ["--cg"]
         if self.chdir is not None:
             res += ["--chdir=%s" % self.chdir]
         for src, dest, options in self.dirs:
diff --git a/docker-compose.test.yml b/docker-compose.test.yml
index 8a121b313f..54e4e2dbbd 100644
--- a/docker-compose.test.yml
+++ b/docker-compose.test.yml
@@ -1,5 +1,3 @@
-version: "3.3"
-
 services:
   testdb:
     image: postgres
@@ -19,8 +17,11 @@ services:
     volumes:
       - "./codecov:/home/cmsuser/cms/codecov"
     privileged: true
+    cgroup: host
     command: >
       wait-for-it testdb:5432 -- sh -c "
+      sudo mkdir /run/isolate ;
+      echo /sys/fs/cgroup | sudo tee /run/isolate/cgroup ;
       dropdb --host=testdb --username=postgres cmsdbfortesting ;
       createdb --host=testdb --username=postgres cmsdbfortesting ;
       cmsInitDB ;
diff --git a/isolate b/isolate
index eda2c65acd..758ab000e3 160000
--- a/isolate
+++ b/isolate
@@ -1 +1 @@
-Subproject commit eda2c65acd9ad5d4fc8ba46884e66445a8fca1b8
+Subproject commit 758ab000e3a1bcf1e57ffddea2340ffa1a5af49b