diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index c4a1e58bd..33be2b109 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -21840,6 +21840,7 @@ interface SubtleCrypto {
     exportKey(format: "jwk", key: CryptoKey): Promise<JsonWebKey>;
     exportKey(format: Exclude<KeyFormat, "jwk">, key: CryptoKey): Promise<ArrayBuffer>;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/generateKey) */
+    generateKey(algorithm: "Ed25519", extractable: boolean, keyUsages: ReadonlyArray<"sign" | "verify">): Promise<CryptoKeyPair>;
     generateKey(algorithm: RsaHashedKeyGenParams | EcKeyGenParams, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKeyPair>;
     generateKey(algorithm: AesKeyGenParams | HmacKeyGenParams | Pbkdf2Params, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKey>;
     generateKey(algorithm: AlgorithmIdentifier, extractable: boolean, keyUsages: KeyUsage[]): Promise<CryptoKeyPair | CryptoKey>;
diff --git a/baselines/dom.iterable.generated.d.ts b/baselines/dom.iterable.generated.d.ts
index 45fb1eac6..98ca90f92 100644
--- a/baselines/dom.iterable.generated.d.ts
+++ b/baselines/dom.iterable.generated.d.ts
@@ -287,6 +287,7 @@ interface SubtleCrypto {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/deriveKey) */
     deriveKey(algorithm: AlgorithmIdentifier | EcdhKeyDeriveParams | HkdfParams | Pbkdf2Params, baseKey: CryptoKey, derivedKeyType: AlgorithmIdentifier | AesDerivedKeyParams | HmacImportParams | HkdfParams | Pbkdf2Params, extractable: boolean, keyUsages: Iterable<KeyUsage>): Promise<CryptoKey>;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/generateKey) */
+    generateKey(algorithm: "Ed25519", extractable: boolean, keyUsages: ReadonlyArray<"sign" | "verify">): Promise<CryptoKeyPair>;
     generateKey(algorithm: RsaHashedKeyGenParams | EcKeyGenParams, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKeyPair>;
     generateKey(algorithm: AesKeyGenParams | HmacKeyGenParams | Pbkdf2Params, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKey>;
     generateKey(algorithm: AlgorithmIdentifier, extractable: boolean, keyUsages: Iterable<KeyUsage>): Promise<CryptoKeyPair | CryptoKey>;
diff --git a/baselines/serviceworker.generated.d.ts b/baselines/serviceworker.generated.d.ts
index 7b3b420c0..7c60baeb3 100644
--- a/baselines/serviceworker.generated.d.ts
+++ b/baselines/serviceworker.generated.d.ts
@@ -5017,6 +5017,7 @@ interface SubtleCrypto {
     exportKey(format: "jwk", key: CryptoKey): Promise<JsonWebKey>;
     exportKey(format: Exclude<KeyFormat, "jwk">, key: CryptoKey): Promise<ArrayBuffer>;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/generateKey) */
+    generateKey(algorithm: "Ed25519", extractable: boolean, keyUsages: ReadonlyArray<"sign" | "verify">): Promise<CryptoKeyPair>;
     generateKey(algorithm: RsaHashedKeyGenParams | EcKeyGenParams, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKeyPair>;
     generateKey(algorithm: AesKeyGenParams | HmacKeyGenParams | Pbkdf2Params, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKey>;
     generateKey(algorithm: AlgorithmIdentifier, extractable: boolean, keyUsages: KeyUsage[]): Promise<CryptoKeyPair | CryptoKey>;
diff --git a/baselines/serviceworker.iterable.generated.d.ts b/baselines/serviceworker.iterable.generated.d.ts
index 6b53e4fd1..0eed5dfb6 100644
--- a/baselines/serviceworker.iterable.generated.d.ts
+++ b/baselines/serviceworker.iterable.generated.d.ts
@@ -109,6 +109,7 @@ interface SubtleCrypto {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/deriveKey) */
     deriveKey(algorithm: AlgorithmIdentifier | EcdhKeyDeriveParams | HkdfParams | Pbkdf2Params, baseKey: CryptoKey, derivedKeyType: AlgorithmIdentifier | AesDerivedKeyParams | HmacImportParams | HkdfParams | Pbkdf2Params, extractable: boolean, keyUsages: Iterable<KeyUsage>): Promise<CryptoKey>;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/generateKey) */
+    generateKey(algorithm: "Ed25519", extractable: boolean, keyUsages: ReadonlyArray<"sign" | "verify">): Promise<CryptoKeyPair>;
     generateKey(algorithm: RsaHashedKeyGenParams | EcKeyGenParams, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKeyPair>;
     generateKey(algorithm: AesKeyGenParams | HmacKeyGenParams | Pbkdf2Params, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKey>;
     generateKey(algorithm: AlgorithmIdentifier, extractable: boolean, keyUsages: Iterable<KeyUsage>): Promise<CryptoKeyPair | CryptoKey>;
diff --git a/baselines/sharedworker.generated.d.ts b/baselines/sharedworker.generated.d.ts
index 234617a85..ece37067b 100644
--- a/baselines/sharedworker.generated.d.ts
+++ b/baselines/sharedworker.generated.d.ts
@@ -4828,6 +4828,7 @@ interface SubtleCrypto {
     exportKey(format: "jwk", key: CryptoKey): Promise<JsonWebKey>;
     exportKey(format: Exclude<KeyFormat, "jwk">, key: CryptoKey): Promise<ArrayBuffer>;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/generateKey) */
+    generateKey(algorithm: "Ed25519", extractable: boolean, keyUsages: ReadonlyArray<"sign" | "verify">): Promise<CryptoKeyPair>;
     generateKey(algorithm: RsaHashedKeyGenParams | EcKeyGenParams, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKeyPair>;
     generateKey(algorithm: AesKeyGenParams | HmacKeyGenParams | Pbkdf2Params, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKey>;
     generateKey(algorithm: AlgorithmIdentifier, extractable: boolean, keyUsages: KeyUsage[]): Promise<CryptoKeyPair | CryptoKey>;
diff --git a/baselines/sharedworker.iterable.generated.d.ts b/baselines/sharedworker.iterable.generated.d.ts
index 45786390e..21b852c01 100644
--- a/baselines/sharedworker.iterable.generated.d.ts
+++ b/baselines/sharedworker.iterable.generated.d.ts
@@ -109,6 +109,7 @@ interface SubtleCrypto {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/deriveKey) */
     deriveKey(algorithm: AlgorithmIdentifier | EcdhKeyDeriveParams | HkdfParams | Pbkdf2Params, baseKey: CryptoKey, derivedKeyType: AlgorithmIdentifier | AesDerivedKeyParams | HmacImportParams | HkdfParams | Pbkdf2Params, extractable: boolean, keyUsages: Iterable<KeyUsage>): Promise<CryptoKey>;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/generateKey) */
+    generateKey(algorithm: "Ed25519", extractable: boolean, keyUsages: ReadonlyArray<"sign" | "verify">): Promise<CryptoKeyPair>;
     generateKey(algorithm: RsaHashedKeyGenParams | EcKeyGenParams, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKeyPair>;
     generateKey(algorithm: AesKeyGenParams | HmacKeyGenParams | Pbkdf2Params, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKey>;
     generateKey(algorithm: AlgorithmIdentifier, extractable: boolean, keyUsages: Iterable<KeyUsage>): Promise<CryptoKeyPair | CryptoKey>;
diff --git a/baselines/webworker.generated.d.ts b/baselines/webworker.generated.d.ts
index e2b747f88..217032859 100644
--- a/baselines/webworker.generated.d.ts
+++ b/baselines/webworker.generated.d.ts
@@ -5323,6 +5323,7 @@ interface SubtleCrypto {
     exportKey(format: "jwk", key: CryptoKey): Promise<JsonWebKey>;
     exportKey(format: Exclude<KeyFormat, "jwk">, key: CryptoKey): Promise<ArrayBuffer>;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/generateKey) */
+    generateKey(algorithm: "Ed25519", extractable: boolean, keyUsages: ReadonlyArray<"sign" | "verify">): Promise<CryptoKeyPair>;
     generateKey(algorithm: RsaHashedKeyGenParams | EcKeyGenParams, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKeyPair>;
     generateKey(algorithm: AesKeyGenParams | HmacKeyGenParams | Pbkdf2Params, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKey>;
     generateKey(algorithm: AlgorithmIdentifier, extractable: boolean, keyUsages: KeyUsage[]): Promise<CryptoKeyPair | CryptoKey>;
diff --git a/baselines/webworker.iterable.generated.d.ts b/baselines/webworker.iterable.generated.d.ts
index 95f733c1b..0bf0966ff 100644
--- a/baselines/webworker.iterable.generated.d.ts
+++ b/baselines/webworker.iterable.generated.d.ts
@@ -109,6 +109,7 @@ interface SubtleCrypto {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/deriveKey) */
     deriveKey(algorithm: AlgorithmIdentifier | EcdhKeyDeriveParams | HkdfParams | Pbkdf2Params, baseKey: CryptoKey, derivedKeyType: AlgorithmIdentifier | AesDerivedKeyParams | HmacImportParams | HkdfParams | Pbkdf2Params, extractable: boolean, keyUsages: Iterable<KeyUsage>): Promise<CryptoKey>;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/generateKey) */
+    generateKey(algorithm: "Ed25519", extractable: boolean, keyUsages: ReadonlyArray<"sign" | "verify">): Promise<CryptoKeyPair>;
     generateKey(algorithm: RsaHashedKeyGenParams | EcKeyGenParams, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKeyPair>;
     generateKey(algorithm: AesKeyGenParams | HmacKeyGenParams | Pbkdf2Params, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKey>;
     generateKey(algorithm: AlgorithmIdentifier, extractable: boolean, keyUsages: Iterable<KeyUsage>): Promise<CryptoKeyPair | CryptoKey>;
diff --git a/inputfiles/overridingTypes.jsonc b/inputfiles/overridingTypes.jsonc
index 750dec6cb..218462b48 100644
--- a/inputfiles/overridingTypes.jsonc
+++ b/inputfiles/overridingTypes.jsonc
@@ -1589,6 +1589,7 @@
                         "generateKey": {
                             "name": "generateKey",
                             "additionalSignatures": [
+                                "generateKey(algorithm: \"Ed25519\", extractable: boolean, keyUsages: ReadonlyArray<\"sign\" | \"verify\">): Promise<CryptoKeyPair>",
                                 "generateKey(algorithm: RsaHashedKeyGenParams | EcKeyGenParams, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKeyPair>",
                                 "generateKey(algorithm: AesKeyGenParams | HmacKeyGenParams | Pbkdf2Params, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKey>"
                             ],