diff --git a/.github/workflows/horizon.yml b/.github/workflows/horizon.yml
index f315e27791..0e458f6de5 100644
--- a/.github/workflows/horizon.yml
+++ b/.github/workflows/horizon.yml
@@ -13,7 +13,7 @@ jobs:
         os: [ubuntu-20.04, ubuntu-22.04]
         go: ["1.21", "1.22"]
         pg: [12, 16]
-        protocol-version: [21]
+        protocol-version: [21, 22]
     runs-on: ${{ matrix.os }}
     services:
       postgres:
@@ -36,6 +36,9 @@ jobs:
       PROTOCOL_21_CORE_DEBIAN_PKG_VERSION: 21.3.1-2007.4ede19620.focal
       PROTOCOL_21_CORE_DOCKER_IMG: stellar/stellar-core:21.3.1-2007.4ede19620.focal
       PROTOCOL_21_SOROBAN_RPC_DOCKER_IMG: stellar/soroban-rpc:21.4.1
+      PROTOCOL_22_CORE_DEBIAN_PKG_VERSION: 22.0.0-2088.rc1.2d8d764cd.focal
+      PROTOCOL_22_CORE_DOCKER_IMG: stellar/stellar-core:22.0.0-2088.rc1.2d8d764cd.focal
+      PROTOCOL_22_SOROBAN_RPC_DOCKER_IMG: stellar/soroban-rpc:22.0.0-rc1-98
       PGHOST: localhost
       PGPORT: 5432
       PGUSER: postgres
diff --git a/services/horizon/internal/ingest/main.go b/services/horizon/internal/ingest/main.go
index 64e4558723..e471b7c4e4 100644
--- a/services/horizon/internal/ingest/main.go
+++ b/services/horizon/internal/ingest/main.go
@@ -31,7 +31,7 @@ import (
 const (
 	// MaxSupportedProtocolVersion defines the maximum supported version of
 	// the Stellar protocol.
-	MaxSupportedProtocolVersion uint32 = 21
+	MaxSupportedProtocolVersion uint32 = 22
 
 	// CurrentVersion reflects the latest version of the ingestion
 	// algorithm. This value is stored in KV store and is used to decide