diff --git a/backend/auth-daemon/.devcontainer/devcontainer.json b/backend/auth-daemon/.devcontainer/devcontainer.json
index 720464918..16b6de367 100644
--- a/backend/auth-daemon/.devcontainer/devcontainer.json
+++ b/backend/auth-daemon/.devcontainer/devcontainer.json
@@ -5,7 +5,7 @@
     "dockerfile": "Dockerfile"
   },
   "containerEnv": {
-    "AUTH_DOMAIN": "https://authn.diamond.ac.uk/realms/master",
+    "AUTH_DOMAIN": "https://identity.diamond.ac.uk/realms/dls",
     "CLIENT_ID": "workflows-cluster",
     "GRAPH_URL": "https://workflows.diamond.ac.uk/graphql"
   },
diff --git a/charts/workflows-cluster/Chart.yaml b/charts/workflows-cluster/Chart.yaml
index 8b7e68bae..902d40df1 100644
--- a/charts/workflows-cluster/Chart.yaml
+++ b/charts/workflows-cluster/Chart.yaml
@@ -3,7 +3,7 @@ name: workflows-cluster
 description: A virtual cluster for Data Analysis workflows
 type: application
 
-version: 0.13.20
+version: 0.13.21
 dependencies:
   - name: common
     version: 2.23.0
diff --git a/charts/workflows-cluster/staging-values.yaml b/charts/workflows-cluster/staging-values.yaml
index a279141ae..124b00de1 100644
--- a/charts/workflows-cluster/staging-values.yaml
+++ b/charts/workflows-cluster/staging-values.yaml
@@ -192,26 +192,3 @@ authenticationConfiguration:
           message: "username cannot use reserved system: prefix"
         - expression: "user.groups.all(group, !group.startsWith('system:'))"
           message: "groups cannot use reserved system: prefix"
-    - issuer:
-        url: https://authn.diamond.ac.uk/realms/master
-        audiences:
-          - workflows-cluster-staging
-          - graph
-        audienceMatchPolicy: MatchAny
-      claimMappings:
-        username:
-          claim: fedid
-          prefix: "oidc:"
-        groups:
-          claim: groups
-          prefix: "oidc:"
-        uid:
-          claim: fedid
-        extra:
-          - key: "workflows.diamond.ac.uk/posixuid"
-            valueExpression: "string(claims.posix_uid)"
-      userValidationRules:
-        - expression: "!user.username.startsWith('system:')"
-          message: "username cannot use reserved system: prefix"
-        - expression: "user.groups.all(group, !group.startsWith('system:'))"
-          message: "groups cannot use reserved system: prefix"
diff --git a/charts/workflows-cluster/values.yaml b/charts/workflows-cluster/values.yaml
index bf11cff0e..c09568836 100644
--- a/charts/workflows-cluster/values.yaml
+++ b/charts/workflows-cluster/values.yaml
@@ -229,26 +229,3 @@ authenticationConfiguration:
           message: "username cannot use reserved system: prefix"
         - expression: "user.groups.all(group, !group.startsWith('system:'))"
           message: "groups cannot use reserved system: prefix"
-    - issuer:
-        url: https://authn.diamond.ac.uk/realms/master
-        audiences:
-          - workflows-cluster
-          - graph
-        audienceMatchPolicy: MatchAny
-      claimMappings:
-        username:
-          claim: fedid
-          prefix: "oidc:"
-        groups:
-          claim: groups
-          prefix: "oidc:"
-        uid:
-          claim: fedid
-        extra:
-          - key: "workflows.diamond.ac.uk/posixuid"
-            valueExpression: "string(claims.posix_uid)"
-      userValidationRules:
-        - expression: "!user.username.startsWith('system:')"
-          message: "username cannot use reserved system: prefix"
-        - expression: "user.groups.all(group, !group.startsWith('system:'))"
-          message: "groups cannot use reserved system: prefix"
diff --git a/frontend/relay-workflows-lib/mocks/mockKeycloak.ts b/frontend/relay-workflows-lib/mocks/mockKeycloak.ts
index cddea891c..4579ddbac 100644
--- a/frontend/relay-workflows-lib/mocks/mockKeycloak.ts
+++ b/frontend/relay-workflows-lib/mocks/mockKeycloak.ts
@@ -10,7 +10,7 @@ export const mockJwtPayload = {
   email: "mock@diamond.ac.uk",
   exp: Number.MAX_SAFE_INTEGER,
   iat: Number.MIN_SAFE_INTEGER,
-  iss: "https://authn.diamond.ac.uk/realms/master",
+  iss: "https://identity.diamond.ac.uk/realms/dls",
   name: "Mo C. Kuser",
 };