diff --git a/keyserver/flow-typed/npm/@matrix-org/olm_vx.x.x.js b/keyserver/flow-typed/npm/@matrix-org/olm_vx.x.x.js
new file mode 100644
--- /dev/null
+++ b/keyserver/flow-typed/npm/@matrix-org/olm_vx.x.x.js
@@ -0,0 +1,124 @@
+// flow-typed signature: 085f002da86534cfd8cee47ffa99dd67
+// flow-typed version: <<STUB>>/@matrix-org/olm_v3.2.4/flow_v0.182.0
+
+declare module '@matrix-org/olm' {
+  
+  declare export class Account {
+    constructor(): this;
+    free(): void;
+    create(): void;
+    identity_keys(): string;
+    sign(message: string | Uint8Array): string;
+    one_time_keys(): string;
+    mark_keys_as_published(): void;
+    max_number_of_one_time_keys(): number;
+    generate_one_time_keys(number_of_keys: number): void;
+    remove_one_time_keys(session: Session): void;
+    generate_fallback_key(): void;
+    fallback_key(): string;
+    pickle(key: string | Uint8Array): string;
+    unpickle(key: string | Uint8Array, pickle: string): void;
+  }
+
+  declare export class Session {
+    constructor(): this;
+    free(): void;
+    pickle(key: string | Uint8Array): string;
+    unpickle(key: string | Uint8Array, pickle: string): void;
+    create_outbound(
+        account: Account, their_identity_key: string, their_one_time_key: string,
+    ): void;
+    create_inbound(account: Account, one_time_key_message: string): void;
+    create_inbound_from(
+        account: Account, identity_key: string, one_time_key_message: string,
+    ): void;
+    session_id(): string;
+    has_received_message(): boolean;
+    matches_inbound(one_time_key_message: string): boolean;
+    matches_inbound_from(identity_key: string, one_time_key_message: string): boolean;
+    encrypt(plaintext: string): Object;
+    decrypt(message_type: number, message: string): string;
+    describe(): string;
+  }
+
+  declare class Utility {
+    constructor(): this;
+    free(): void;
+    sha256(input: string | Uint8Array): string;
+    ed25519_verify(key: string, message: string | Uint8Array, signature: string): void;
+  }
+
+  declare class InboundGroupSession {
+    constructor(): this;
+    free(): void;
+    pickle(key: string | Uint8Array): string;
+    unpickle(key: string | Uint8Array, pickle: string): void;
+    create(session_key: string): string;
+    import_session(session_key: string): string;
+    decrypt(message: string): Object;
+    session_id(): string;
+    first_known_index(): number;
+    export_session(message_index: number): string;
+  }
+
+  declare class OutboundGroupSession {
+    constructor(): this;
+    free(): void;
+    pickle(key: string | Uint8Array): string;
+    unpickle(key: string | Uint8Array, pickle: string): void;
+    create(): void;
+    encrypt(plaintext: string): string;
+    session_id(): string;
+    session_key(): string;
+    message_index(): number;
+  }
+
+  declare class PkEncryption {
+    constructor(): this;
+    free(): void;
+    set_recipient_key(key: string): void;
+    encrypt(plaintext: string): Object;
+  }
+
+  declare class PkDecryption {
+    constructor(): this;
+    free(): void;
+    init_with_private_key(key: Uint8Array): string;
+    generate_key(): string;
+    get_private_key(): Uint8Array;
+    pickle(key: string | Uint8Array): string;
+    unpickle(key: string | Uint8Array, pickle: string): string;
+    decrypt(ephemeral_key: string, mac: string, ciphertext: string): string;
+  }
+
+  declare class PkSigning {
+    constructor(): this;
+    free(): void;
+    init_with_seed(seed: Uint8Array): string;
+    generate_seed(): Uint8Array;
+    sign(message: string): string;
+  }
+
+  declare class SAS {
+    constructor(): this;
+    free(): void;
+    get_pubkey(): string;
+    set_their_key(their_key: string): void;
+    generate_bytes(info: string, length: number): Uint8Array;
+    calculate_mac(input: string, info: string): string;
+    calculate_mac_long_kdf(input: string, info: string): string;
+  }
+
+  declare export function init(opts?: Object): Promise<void>;
+
+  declare export function get_library_version(): [number, number, number];
+
+  declare export var PRIVATE_KEY_LENGTH: number;
+
+  declare export default {
+    init: typeof init,
+    get_library_version: typeof get_library_version,
+    PRIVATE_KEY_LENGTH: typeof PRIVATE_KEY_LENGTH,
+    Account: typeof Account,
+  };
+}
diff --git a/web/flow-typed/npm/@matrix-org/olm_vx.x.x.js b/web/flow-typed/npm/@matrix-org/olm_vx.x.x.js
new file mode 100644
--- /dev/null
+++ b/web/flow-typed/npm/@matrix-org/olm_vx.x.x.js
@@ -0,0 +1,124 @@
+// flow-typed signature: 085f002da86534cfd8cee47ffa99dd67
+// flow-typed version: <<STUB>>/@matrix-org/olm_v3.2.4/flow_v0.182.0
+
+declare module '@matrix-org/olm' {
+  
+  declare export class Account {
+    constructor(): this;
+    free(): void;
+    create(): void;
+    identity_keys(): string;
+    sign(message: string | Uint8Array): string;
+    one_time_keys(): string;
+    mark_keys_as_published(): void;
+    max_number_of_one_time_keys(): number;
+    generate_one_time_keys(number_of_keys: number): void;
+    remove_one_time_keys(session: Session): void;
+    generate_fallback_key(): void;
+    fallback_key(): string;
+    pickle(key: string | Uint8Array): string;
+    unpickle(key: string | Uint8Array, pickle: string): void;
+  }
+
+  declare export class Session {
+    constructor(): this;
+    free(): void;
+    pickle(key: string | Uint8Array): string;
+    unpickle(key: string | Uint8Array, pickle: string): void;
+    create_outbound(
+        account: Account, their_identity_key: string, their_one_time_key: string,
+    ): void;
+    create_inbound(account: Account, one_time_key_message: string): void;
+    create_inbound_from(
+        account: Account, identity_key: string, one_time_key_message: string,
+    ): void;
+    session_id(): string;
+    has_received_message(): boolean;
+    matches_inbound(one_time_key_message: string): boolean;
+    matches_inbound_from(identity_key: string, one_time_key_message: string): boolean;
+    encrypt(plaintext: string): Object;
+    decrypt(message_type: number, message: string): string;
+    describe(): string;
+  }
+
+  declare class Utility {
+    constructor(): this;
+    free(): void;
+    sha256(input: string | Uint8Array): string;
+    ed25519_verify(key: string, message: string | Uint8Array, signature: string): void;
+  }
+
+  declare class InboundGroupSession {
+    constructor(): this;
+    free(): void;
+    pickle(key: string | Uint8Array): string;
+    unpickle(key: string | Uint8Array, pickle: string): void;
+    create(session_key: string): string;
+    import_session(session_key: string): string;
+    decrypt(message: string): Object;
+    session_id(): string;
+    first_known_index(): number;
+    export_session(message_index: number): string;
+  }
+
+  declare class OutboundGroupSession {
+    constructor(): this;
+    free(): void;
+    pickle(key: string | Uint8Array): string;
+    unpickle(key: string | Uint8Array, pickle: string): void;
+    create(): void;
+    encrypt(plaintext: string): string;
+    session_id(): string;
+    session_key(): string;
+    message_index(): number;
+  }
+
+  declare class PkEncryption {
+    constructor(): this;
+    free(): void;
+    set_recipient_key(key: string): void;
+    encrypt(plaintext: string): Object;
+  }
+
+  declare class PkDecryption {
+    constructor(): this;
+    free(): void;
+    init_with_private_key(key: Uint8Array): string;
+    generate_key(): string;
+    get_private_key(): Uint8Array;
+    pickle(key: string | Uint8Array): string;
+    unpickle(key: string | Uint8Array, pickle: string): string;
+    decrypt(ephemeral_key: string, mac: string, ciphertext: string): string;
+  }
+
+  declare class PkSigning {
+    constructor(): this;
+    free(): void;
+    init_with_seed(seed: Uint8Array): string;
+    generate_seed(): Uint8Array;
+    sign(message: string): string;
+  }
+
+  declare class SAS {
+    constructor(): this;
+    free(): void;
+    get_pubkey(): string;
+    set_their_key(their_key: string): void;
+    generate_bytes(info: string, length: number): Uint8Array;
+    calculate_mac(input: string, info: string): string;
+    calculate_mac_long_kdf(input: string, info: string): string;
+  }
+
+  declare export function init(opts?: Object): Promise<void>;
+
+  declare export function get_library_version(): [number, number, number];
+
+  declare export var PRIVATE_KEY_LENGTH: number;
+
+  declare export default {
+    init: typeof init,
+    get_library_version: typeof get_library_version,
+    PRIVATE_KEY_LENGTH: typeof PRIVATE_KEY_LENGTH,
+    Account: typeof Account,
+  };
+}