diff --git a/master/custom/builders.py b/master/custom/builders.py
index 6f0f0116..c5b35b0a 100644
--- a/master/custom/builders.py
+++ b/master/custom/builders.py
@@ -249,8 +249,6 @@
     ("AMD64 Fedora Rawhide LTO", "cstratak-fedora-rawhide-x86_64", LTONonDebugUnixBuild),
     ("AMD64 Fedora Rawhide LTO + PGO", "cstratak-fedora-rawhide-x86_64", LTOPGONonDebugBuild),
 
-    ("AMD64 Ubuntu", "skumaran-ubuntu-x86_64", UnixBuild),
-
     ("AMD64 RHEL8 FIPS No Builtin Hashes", "cstratak-RHEL8-fips-x86_64", RHEL8NoBuiltinHashesUnixBuild),
 
     ("AMD64 CentOS9 FIPS Only Blake2 Builtin Hash", "cstratak-CentOS9-fips-x86_64", CentOS9NoBuiltinHashesUnixBuildExceptBlake2),
diff --git a/master/custom/workers.py b/master/custom/workers.py
index bf960055..ab47ca0f 100644
--- a/master/custom/workers.py
+++ b/master/custom/workers.py
@@ -260,10 +260,6 @@ def get_workers(settings):
             # Problematic ISP causes issues connecting to testpython.net
             exclude_test_resources=['urlfetch', 'network'],
         ),
-        cpw(
-            name="skumaran-ubuntu-x86_64",
-            tags=['linux', 'unix', 'ubuntu', 'amd64', 'x86-64'],
-        ),
         cpw(
             name="ware-alpine",
             tags=['linux', 'unix', 'alpine', 'docker', 'amd64', 'x86-64', 'musl'],