diff --git a/tabby-ssh/src/components/hostKeyPromptModal.component.ts b/tabby-ssh/src/components/hostKeyPromptModal.component.ts
index 80586086..52644675 100644
--- a/tabby-ssh/src/components/hostKeyPromptModal.component.ts
+++ b/tabby-ssh/src/components/hostKeyPromptModal.component.ts
@@ -32,8 +32,8 @@ export class HostKeyPromptModalComponent {
         this.modalInstance.close(true)
     }
 
-    acceptAndSave () {
-        this.knownHosts.store(this.selector, this.digest)
+    async acceptAndSave () {
+        await this.knownHosts.store(this.selector, this.digest)
         this.accept()
     }
 
diff --git a/tabby-ssh/src/services/sshKnownHosts.service.ts b/tabby-ssh/src/services/sshKnownHosts.service.ts
index c56b41cb..e80ffd69 100644
--- a/tabby-ssh/src/services/sshKnownHosts.service.ts
+++ b/tabby-ssh/src/services/sshKnownHosts.service.ts
@@ -21,12 +21,13 @@ export class SSHKnownHostsService {
         return this.config.store.ssh.knownHosts.find(x => x.host === selector.host && x.port === selector.port && x.type === selector.type) ?? null
     }
 
-    store (selector: KnownHostSelector, digest: string): void {
+    async store (selector: KnownHostSelector, digest: string): Promise<void> {
         const existing = this.getFor(selector)
         if (existing) {
             existing.digest = digest
         } else {
             this.config.store.ssh.knownHosts.push({ ...selector, digest })
         }
+        this.config.save()
     }
 }