diff --git a/keyserver/src/cron/compare-users.js b/keyserver/src/cron/compare-users.js
--- a/keyserver/src/cron/compare-users.js
+++ b/keyserver/src/cron/compare-users.js
@@ -2,7 +2,7 @@
 import { getRustAPI } from 'rust-node-addon';
 
 import { deleteCookies } from '../deleters/cookie-deleters.js';
-import { fetchNativeCookieIDsForUserIDs } from '../fetchers/cookie-fetchers.js';
+import { fetchCookieIDsToInvalidateToPopulateIdentityService } from '../fetchers/cookie-fetchers.js';
 import { fetchAllUserIDs } from '../fetchers/user-fetchers.js';
 
 async function compareMySQLUsersToIdentityService(): Promise<void> {
@@ -23,7 +23,7 @@
   if (usersMissingFromIdentity.length === 0) {
     return;
   }
-  const cookieIDs = await fetchNativeCookieIDsForUserIDs(
+  const cookieIDs = await fetchCookieIDsToInvalidateToPopulateIdentityService(
     usersMissingFromIdentity,
   );
   if (cookieIDs.length === 0) {
diff --git a/keyserver/src/fetchers/cookie-fetchers.js b/keyserver/src/fetchers/cookie-fetchers.js
--- a/keyserver/src/fetchers/cookie-fetchers.js
+++ b/keyserver/src/fetchers/cookie-fetchers.js
@@ -1,7 +1,5 @@
 // @flow
 
-import { deviceTypes } from 'lib/types/device-types.js';
-
 import { dbQuery, SQL } from '../database/database.js';
 
 // This function is used for invalidating native sessions so that we can trigger
@@ -10,16 +8,23 @@
 // password on the keyserver to populate the identity service. We only
 // invalidate native sessions because web sessions don't cache the user's
 // password, and we don't want any user-visible issues to result from this.
-async function fetchNativeCookieIDsForUserIDs(
+async function fetchCookieIDsToInvalidateToPopulateIdentityService(
   userIDs: $ReadOnlyArray<string>,
 ): Promise<string[]> {
+  // Native clients before codeVersion 193 don't provide the info necessary to
+  // call the identity service, so there's no point to invalidating their
+  // sessions. On Android, builds 193/194 have a bug that breaks log-in, so we
+  // don't want to invalidate their sessions.
   const query = SQL`
     SELECT id
     FROM cookies
-    WHERE platform IN (${deviceTypes}) AND user IN (${userIDs})
+    WHERE user IN (${userIDs}) AND (
+      (platform = 'ios' AND JSON_EXTRACT(versions, '$.codeVersion') > 192) OR
+      (platform = 'android' AND JSON_EXTRACT(versions, '$.codeVersion') > 194)
+    )
   `;
   const [result] = await dbQuery(query);
   return result.map(({ id }) => id.toString());
 }
 
-export { fetchNativeCookieIDsForUserIDs };
+export { fetchCookieIDsToInvalidateToPopulateIdentityService };