diff --git a/packages/core/src/CSL/certificate.ts b/packages/core/src/CSL/certificate.ts
index 15eeb3e469b..854b5f1fa61 100644
--- a/packages/core/src/CSL/certificate.ts
+++ b/packages/core/src/CSL/certificate.ts
@@ -124,6 +124,7 @@ export const poolRetirement = (poolId: Cardano.PoolId, epoch: number) =>
 
 export const stakeDelegation = (rewardAccount: Cardano.RewardAccount, delegatee: Cardano.PoolId) =>
   Certificate.new_stake_delegation(
+    // TODO: add coreToCsl support for genesis pool IDs
     StakeDelegation.new(stakeAddressToCredential(rewardAccount), Ed25519KeyHash.from_bech32(delegatee.toString()))
   );
 
diff --git a/packages/core/src/Cardano/types/StakePool/primitives.ts b/packages/core/src/Cardano/types/StakePool/primitives.ts
index dd837373965..3b234c7a617 100644
--- a/packages/core/src/Cardano/types/StakePool/primitives.ts
+++ b/packages/core/src/Cardano/types/StakePool/primitives.ts
@@ -1,16 +1,27 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 import { Hash28ByteBase16, OpaqueString, typedBech32, typedHex } from '../../util';
+import { InvalidStringError } from '../../..';
 
 /**
- * pool operator verification key hash as bech32 string
+ * pool operator verification key hash as bech32 string or a genesis pool ID
  */
 export type PoolId = OpaqueString<'PoolId'>;
 
 /**
- * @param {string} value blake2b_224 digest of an operator verification key hash
+ * @param {string} value blake2b_224 digest of an operator verification key hash or a genesis pool ID
  * @throws InvalidStringError
  */
-export const PoolId = (value: string): PoolId => typedBech32(value, 'pool', 45);
+export const PoolId = (value: string): PoolId => {
+  try {
+    return typedBech32(value, 'pool', 45);
+  } catch (error: unknown) {
+    // eslint-disable-next-line prettier/prettier
+    if ((/^ShelleyGenesis-[\dA-Fa-f]{16}$/).test(value)) {
+      return value as unknown as PoolId;
+    }
+    throw new InvalidStringError('Expected PoolId to be either bech32 or genesis stake pool', error);
+  }
+};
 
 /**
  * pool operator verification key hash as hex string
diff --git a/packages/core/test/Cardano/types/StakePool.test.ts b/packages/core/test/Cardano/types/StakePool.test.ts
index 47cb5f1ca38..f32ef15e56b 100644
--- a/packages/core/test/Cardano/types/StakePool.test.ts
+++ b/packages/core/test/Cardano/types/StakePool.test.ts
@@ -5,6 +5,10 @@ describe('Cardano/types/StakePool', () => {
     expect(() => Cardano.PoolId('pool1zuevzm3xlrhmwjw87ec38mzs02tlkwec9wxpgafcaykmwg7efhh')).not.toThrow();
   });
 
+  it('PoolId() accepts a valid genesis pool ID', () => {
+    expect(() => Cardano.PoolId('ShelleyGenesis-eff1b5b26e65b791')).not.toThrow();
+  });
+
   it('PoolIdHex() accepts a valid pool id hex string', () => {
     expect(() => Cardano.PoolIdHex('e4b1c8ec89415ce6349755a1aa44b4affbb5f1248ff29943d190c715')).not.toThrow();
   });