diff --git a/.changeset/healthy-suits-punch.md b/.changeset/healthy-suits-punch.md
new file mode 100644
index 000000000..57c3cf537
--- /dev/null
+++ b/.changeset/healthy-suits-punch.md
@@ -0,0 +1,6 @@
+---
+'@hyperlane-xyz/infra': patch
+'@hyperlane-xyz/sdk': patch
+---
+
+Bumped mantapacific reorgPeriod to 1, a reorg period in chain metadata is now required by infra.
diff --git a/rust/config/mainnet3_config.json b/rust/config/mainnet3_config.json
index c144174d6..361e59d0a 100644
--- a/rust/config/mainnet3_config.json
+++ b/rust/config/mainnet3_config.json
@@ -387,7 +387,7 @@
       },
       "blocks": {
         "confirmations": 1,
-        "reorgPeriod": 0,
+        "reorgPeriod": 1,
         "estimateBlockTime": 3
       },
       "rpcUrls": [
diff --git a/typescript/infra/config/environments/mainnet3/validators.ts b/typescript/infra/config/environments/mainnet3/validators.ts
index 61cf6f3f1..3f5e60e16 100644
--- a/typescript/infra/config/environments/mainnet3/validators.ts
+++ b/typescript/infra/config/environments/mainnet3/validators.ts
@@ -1,4 +1,4 @@
-import { chainMetadata } from '@hyperlane-xyz/sdk';
+import { chainMetadata, getReorgPeriod } from '@hyperlane-xyz/sdk';
 
 import { ValidatorBaseChainConfigMap } from '../../../src/config/agent';
 import { Contexts } from '../../contexts';
@@ -13,7 +13,7 @@ export const validatorChainConfig = (
   return {
     celo: {
       interval: 5,
-      reorgPeriod: 0,
+      reorgPeriod: getReorgPeriod(chainMetadata.celo),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -29,7 +29,7 @@ export const validatorChainConfig = (
     },
     ethereum: {
       interval: 5,
-      reorgPeriod: 20,
+      reorgPeriod: getReorgPeriod(chainMetadata.ethereum),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -45,7 +45,7 @@ export const validatorChainConfig = (
     },
     avalanche: {
       interval: 5,
-      reorgPeriod: 3,
+      reorgPeriod: getReorgPeriod(chainMetadata.avalanche),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -63,7 +63,7 @@ export const validatorChainConfig = (
     },
     polygon: {
       interval: 5,
-      reorgPeriod: 256,
+      reorgPeriod: getReorgPeriod(chainMetadata.polygon),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -79,7 +79,7 @@ export const validatorChainConfig = (
     },
     bsc: {
       interval: 5,
-      reorgPeriod: 15,
+      reorgPeriod: getReorgPeriod(chainMetadata.bsc),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -95,7 +95,7 @@ export const validatorChainConfig = (
     },
     arbitrum: {
       interval: 5,
-      reorgPeriod: 0,
+      reorgPeriod: getReorgPeriod(chainMetadata.arbitrum),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -111,7 +111,7 @@ export const validatorChainConfig = (
     },
     optimism: {
       interval: 5,
-      reorgPeriod: 0,
+      reorgPeriod: getReorgPeriod(chainMetadata.optimism),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -129,7 +129,7 @@ export const validatorChainConfig = (
     },
     moonbeam: {
       interval: 5,
-      reorgPeriod: 2,
+      reorgPeriod: getReorgPeriod(chainMetadata.moonbeam),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -145,7 +145,7 @@ export const validatorChainConfig = (
     },
     gnosis: {
       interval: 5,
-      reorgPeriod: 14,
+      reorgPeriod: getReorgPeriod(chainMetadata.gnosis),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -161,7 +161,7 @@ export const validatorChainConfig = (
     },
     base: {
       interval: 5,
-      reorgPeriod: 0,
+      reorgPeriod: getReorgPeriod(chainMetadata.base),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -177,7 +177,7 @@ export const validatorChainConfig = (
     },
     scroll: {
       interval: 5,
-      reorgPeriod: 0,
+      reorgPeriod: getReorgPeriod(chainMetadata.scroll),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -193,7 +193,7 @@ export const validatorChainConfig = (
     },
     polygonzkevm: {
       interval: 5,
-      reorgPeriod: 0,
+      reorgPeriod: getReorgPeriod(chainMetadata.polygonzkevm),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -209,7 +209,7 @@ export const validatorChainConfig = (
     },
     neutron: {
       interval: 5,
-      reorgPeriod: 0,
+      reorgPeriod: getReorgPeriod(chainMetadata.neutron),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -225,7 +225,7 @@ export const validatorChainConfig = (
     },
     mantapacific: {
       interval: 5,
-      reorgPeriod: 0,
+      reorgPeriod: getReorgPeriod(chainMetadata.mantapacific),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
diff --git a/typescript/infra/config/environments/testnet4/validators.ts b/typescript/infra/config/environments/testnet4/validators.ts
index 44ddc2005..23fb1a6f9 100644
--- a/typescript/infra/config/environments/testnet4/validators.ts
+++ b/typescript/infra/config/environments/testnet4/validators.ts
@@ -1,4 +1,4 @@
-import { chainMetadata } from '@hyperlane-xyz/sdk';
+import { chainMetadata, getReorgPeriod } from '@hyperlane-xyz/sdk';
 
 import { ValidatorBaseChainConfigMap } from '../../../src/config/agent';
 import { Contexts } from '../../contexts';
@@ -13,7 +13,7 @@ export const validatorChainConfig = (
   return {
     alfajores: {
       interval: 5,
-      reorgPeriod: chainMetadata.alfajores.blocks!.reorgPeriod!,
+      reorgPeriod: getReorgPeriod(chainMetadata.alfajores),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -33,7 +33,7 @@ export const validatorChainConfig = (
     },
     basegoerli: {
       interval: 5,
-      reorgPeriod: chainMetadata.basegoerli.blocks!.reorgPeriod!,
+      reorgPeriod: getReorgPeriod(chainMetadata.alfajores),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -53,7 +53,7 @@ export const validatorChainConfig = (
     },
     fuji: {
       interval: 5,
-      reorgPeriod: chainMetadata.fuji.blocks!.reorgPeriod!,
+      reorgPeriod: getReorgPeriod(chainMetadata.alfajores),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -73,7 +73,7 @@ export const validatorChainConfig = (
     },
     // chiado: {
     //   interval: 5,
-    //   reorgPeriod: chainMetadata.chiado.blocks!.reorgPeriod!,
+    //   reorgPeriod: getReorgPeriod(chainMetadata.chiado),
     //   validators: validatorsConfig(
     //     {
     //       [Contexts.Hyperlane]: [
@@ -92,7 +92,7 @@ export const validatorChainConfig = (
     // },
     // lineagoerli: {
     //   interval: 5,
-    //   reorgPeriod: chainMetadata.lineagoerli.blocks!.reorgPeriod!,
+    //   reorgPeriod: getReorgPeriod(chainMetadata.lineagoerli),
     //   validators: validatorsConfig(
     //     {
     //       [Contexts.Hyperlane]: [
@@ -111,7 +111,7 @@ export const validatorChainConfig = (
     // },
     mumbai: {
       interval: 5,
-      reorgPeriod: chainMetadata.mumbai.blocks!.reorgPeriod!,
+      reorgPeriod: getReorgPeriod(chainMetadata.mumbai),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -131,7 +131,7 @@ export const validatorChainConfig = (
     },
     bsctestnet: {
       interval: 5,
-      reorgPeriod: chainMetadata.bsctestnet.blocks!.reorgPeriod!,
+      reorgPeriod: getReorgPeriod(chainMetadata.bsctestnet),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -151,7 +151,7 @@ export const validatorChainConfig = (
     },
     goerli: {
       interval: 5,
-      reorgPeriod: chainMetadata.goerli.blocks!.reorgPeriod!,
+      reorgPeriod: getReorgPeriod(chainMetadata.goerli),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -171,7 +171,7 @@ export const validatorChainConfig = (
     },
     scrollsepolia: {
       interval: 5,
-      reorgPeriod: chainMetadata.scrollsepolia.blocks!.reorgPeriod!,
+      reorgPeriod: getReorgPeriod(chainMetadata.scrollsepolia),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -191,7 +191,7 @@ export const validatorChainConfig = (
     },
     sepolia: {
       interval: 5,
-      reorgPeriod: chainMetadata.sepolia.blocks!.reorgPeriod!,
+      reorgPeriod: getReorgPeriod(chainMetadata.sepolia),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -211,7 +211,7 @@ export const validatorChainConfig = (
     },
     moonbasealpha: {
       interval: 5,
-      reorgPeriod: chainMetadata.moonbasealpha.blocks!.reorgPeriod!,
+      reorgPeriod: getReorgPeriod(chainMetadata.moonbasealpha),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -231,7 +231,7 @@ export const validatorChainConfig = (
     },
     optimismgoerli: {
       interval: 5,
-      reorgPeriod: chainMetadata.optimismgoerli.blocks!.reorgPeriod!,
+      reorgPeriod: getReorgPeriod(chainMetadata.optimismgoerli),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -251,7 +251,7 @@ export const validatorChainConfig = (
     },
     arbitrumgoerli: {
       interval: 5,
-      reorgPeriod: chainMetadata.arbitrumgoerli.blocks!.reorgPeriod!,
+      reorgPeriod: getReorgPeriod(chainMetadata.arbitrumgoerli),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -271,7 +271,7 @@ export const validatorChainConfig = (
     },
     polygonzkevmtestnet: {
       interval: 5,
-      reorgPeriod: chainMetadata.polygonzkevmtestnet.blocks!.reorgPeriod!,
+      reorgPeriod: getReorgPeriod(chainMetadata.polygonzkevmtestnet),
       validators: validatorsConfig(
         {
           [Contexts.Hyperlane]: [
@@ -291,7 +291,7 @@ export const validatorChainConfig = (
     },
     // proteustestnet: {
     //   interval: 5,
-    //   reorgPeriod: chainMetadata.proteustestnet.blocks!.reorgPeriod!,
+    //   reorgPeriod: getReorgPeriod(chainMetadata.proteustestnet),
     //   validators: validatorsConfig(
     //     {
     //       [Contexts.Hyperlane]: [
@@ -308,7 +308,7 @@ export const validatorChainConfig = (
     // },
     // solanadevnet: {
     //   interval: 10,
-    //   reorgPeriod: chainMetadata.solanadevnet.blocks!.reorgPeriod!,
+    //   reorgPeriod: getReorgPeriod(chainMetadata.solanadevnet),
     //   validators: validatorsConfig(
     //     {
     //       [Contexts.Hyperlane]: [
diff --git a/typescript/sdk/src/consts/chainMetadata.ts b/typescript/sdk/src/consts/chainMetadata.ts
index 253a67ce9..b76a673a5 100644
--- a/typescript/sdk/src/consts/chainMetadata.ts
+++ b/typescript/sdk/src/consts/chainMetadata.ts
@@ -451,7 +451,7 @@ export const mantapacific: ChainMetadata = {
   blocks: {
     confirmations: 1,
     estimateBlockTime: 3,
-    reorgPeriod: 0,
+    reorgPeriod: 1,
   },
   chainId: 169,
   displayName: 'Manta Pacific',
diff --git a/typescript/sdk/src/index.ts b/typescript/sdk/src/index.ts
index 4013fa9a9..d9dc0501e 100644
--- a/typescript/sdk/src/index.ts
+++ b/typescript/sdk/src/index.ts
@@ -186,6 +186,7 @@ export {
   getChainIdNumber,
   getDomainId,
   isValidChainMetadata,
+  getReorgPeriod,
 } from './metadata/chainMetadataTypes';
 export { ZHash } from './metadata/customZodTypes';
 export {
diff --git a/typescript/sdk/src/metadata/chainMetadataTypes.ts b/typescript/sdk/src/metadata/chainMetadataTypes.ts
index 1ed7ecdb2..240174fb0 100644
--- a/typescript/sdk/src/metadata/chainMetadataTypes.ts
+++ b/typescript/sdk/src/metadata/chainMetadataTypes.ts
@@ -241,3 +241,9 @@ export function getChainIdNumber(chainMetadata: ChainMetadata): number {
   if (typeof chainMetadata.chainId === 'number') return chainMetadata.chainId;
   else throw new Error('ChainId is not a number, chain may be of Cosmos type');
 }
+
+export function getReorgPeriod(chainMetadata: ChainMetadata): number {
+  if (chainMetadata.blocks?.reorgPeriod !== undefined)
+    return chainMetadata.blocks.reorgPeriod;
+  else throw new Error('Chain has no reorg period');
+}