diff --git a/lib/reducers/keyserver-reducer.js b/lib/reducers/keyserver-reducer.js
--- a/lib/reducers/keyserver-reducer.js
+++ b/lib/reducers/keyserver-reducer.js
@@ -4,7 +4,10 @@
 import { reduceDeviceToken } from './device-token-reducer.js';
 import reduceLastCommunicatedPlatformDetails from './last-communicated-platform-details-reducer.js';
 import reduceUpdatesCurrentAsOf from './updates-reducer.js';
-import { addKeyserverActionType } from '../actions/keyserver-actions.js';
+import {
+  addKeyserverActionType,
+  removeKeyserverActionType,
+} from '../actions/keyserver-actions.js';
 import { siweAuthActionTypes } from '../actions/siwe-actions.js';
 import {
   logInActionTypes,
@@ -56,6 +59,23 @@
         },
       },
     };
+  } else if (action.type === removeKeyserverActionType) {
+    const filteredKeys = Object.keys(state.keyserverInfos).filter(
+      key => key !== action.payload.keyserverAdminUserID,
+    );
+
+    const filteredKeyserverInfos = filteredKeys.reduce(
+      (newKeyserverInfos, key) => {
+        newKeyserverInfos[key] = state.keyserverInfos[key];
+        return newKeyserverInfos;
+      },
+      {},
+    );
+
+    return {
+      ...state,
+      keyserverInfos: filteredKeyserverInfos,
+    };
   } else if (action.type === resetUserStateActionType) {
     // this action is only dispatched on native
     const stateCookie = state.keyserverInfos[ashoatKeyserverID]?.cookie;