diff --git a/sshlib/src/main/kotlin/org/connectbot/sshlib/crypto/Algorithms.kt b/sshlib/src/main/kotlin/org/connectbot/sshlib/crypto/Algorithms.kt
index b76bbbd92..57a64b797 100644
--- a/sshlib/src/main/kotlin/org/connectbot/sshlib/crypto/Algorithms.kt
+++ b/sshlib/src/main/kotlin/org/connectbot/sshlib/crypto/Algorithms.kt
@@ -242,6 +242,13 @@ internal enum class KexEntry(
         false,
         { Curve25519KeyExchange() },
     ),
+    CURVE25519_SHA256_LIBSSH(
+        "curve25519-sha256@libssh.org",
+        HASH_SHA256,
+        KexType.ECDH,
+        false,
+        { Curve25519KeyExchange() },
+    ),
     ECDH_SHA2_NISTP256(
         "ecdh-sha2-nistp256",
         HASH_SHA256,
diff --git a/sshlib/src/test/kotlin/org/connectbot/sshlib/client/AsyncSshCompatibilityTest.kt b/sshlib/src/test/kotlin/org/connectbot/sshlib/client/AsyncSshCompatibilityTest.kt
index d2e7279fa..f11ac94df 100644
--- a/sshlib/src/test/kotlin/org/connectbot/sshlib/client/AsyncSshCompatibilityTest.kt
+++ b/sshlib/src/test/kotlin/org/connectbot/sshlib/client/AsyncSshCompatibilityTest.kt
@@ -1,6 +1,6 @@
 /*
  * ConnectBot SSH Library
- * Copyright 2025 Kenny Root
+ * Copyright 2025-2026 Kenny Root
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -80,6 +80,7 @@ class AsyncSshCompatibilityTest {
         @JvmStatic
         fun kexAlgorithms() = listOf(
             "curve25519-sha256",
+            "curve25519-sha256@libssh.org",
             "ecdh-sha2-nistp256",
             "ecdh-sha2-nistp384",
             "ecdh-sha2-nistp521",