diff --git a/src/abstract/weierstrass.ts b/src/abstract/weierstrass.ts
index 6af7341..1c41c7d 100644
--- a/src/abstract/weierstrass.ts
+++ b/src/abstract/weierstrass.ts
@@ -100,6 +100,7 @@ function validatePointOpts<T>(curve: CurvePointsType<T>) {
       wrapPrivateKey: 'boolean',
       isTorsionFree: 'function',
       clearCofactor: 'function',
+      allowInfinityPoint: 'boolean',
     }
   );
   const { endo, Fp, a } = opts;
diff --git a/test/basic.test.js b/test/basic.test.js
index ad36d1a..07b0b7e 100644
--- a/test/basic.test.js
+++ b/test/basic.test.js
@@ -10,7 +10,7 @@ import { secp256r1 } from '../lib/esm/p256.js';
 import { secp384r1 } from '../lib/esm/p384.js';
 import { secp521r1 } from '../lib/esm/p521.js';
 import { secp256k1 } from '../lib/esm/secp256k1.js';
-import { ed25519, ed25519ctx, ed25519ph } from '../lib/esm/ed25519.js';
+import { ed25519, ed25519ctx, ed25519ph, x25519 } from '../lib/esm/ed25519.js';
 import { ed448, ed448ph } from '../lib/esm/ed448.js';
 import { starkCurve } from '../lib/esm/stark.js';
 import { pallas, vesta } from '../lib/esm/pasta.js';
@@ -567,6 +567,17 @@ for (const name in CURVES) {
         { numRuns: NUM_RUNS }
       )
     );
+    should('.verify() should verify empty signatures', () => {
+      const msg = new Uint8Array([]);
+      const priv = C.utils.randomPrivateKey();
+      const pub = C.getPublicKey(priv);
+      const sig = C.sign(msg, priv);
+      deepStrictEqual(
+        C.verify(sig, msg, pub),
+        true,
+        'priv=${toHex(priv)},pub=${toHex(pub)},msg=${msg}'
+      );
+    });
     should('.sign() edge cases', () => {
       throws(() => C.sign());
       throws(() => C.sign(''));
@@ -651,6 +662,16 @@ should('secp224k1 sqrt bug', () => {
   deepStrictEqual(Fp.sqr(sqrtMinus1), Fp.create(-1n));
 });
 
+should('bigInt private keys', () => {
+  // Doesn't support bigints anymore
+  throws(() => ed25519.sign('', 123n));
+  throws(() => ed25519.getPublicKey(123n));
+  throws(() => x25519.getPublicKey(123n));
+  // Weierstrass still supports
+  secp256k1.getPublicKey(123n);
+  secp256k1.sign('', 123n);
+});
+
 // ESM is broken.
 import url from 'url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
diff --git a/test/ed25519.test.js b/test/ed25519.test.js
index ff3ca07..a1eb6a9 100644
--- a/test/ed25519.test.js
+++ b/test/ed25519.test.js
@@ -656,6 +656,15 @@ describe('ed25519', () => {
   });
 });
 
+should('ed25519 bug', () => {
+  const t = 81718630521762619991978402609047527194981150691135404693881672112315521837062n;
+  const point = ed25519.ExtendedPoint.fromAffine({ x: t, y: t });
+  throws(() => point.assertValidity());
+  // Otherwise (without assertValidity):
+  // const point2 = point.double();
+  // point2.toAffine(); // crash!
+});
+
 // ESM is broken.
 import url from 'url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {