diff --git a/.github/workflows/build-testing.yml b/.github/workflows/build-testing.yml
index e3b472a2..5d612e20 100644
--- a/.github/workflows/build-testing.yml
+++ b/.github/workflows/build-testing.yml
@@ -35,7 +35,7 @@ jobs:
       tag: ${{ inputs.tag-prefix }}testing-amd64
       protocol_version_default: 22
       xdr_ref: v22.0.0
-      core_ref: v22.0.0
+      core_ref: v22.1.0rc1
       horizon_ref: horizon-v22.0.1
       stellar_rpc_ref: v22.1.1
       friendbot_ref: horizon-v22.0.1
@@ -59,7 +59,7 @@ jobs:
       tag: ${{ inputs.tag-prefix }}testing-arm64
       protocol_version_default: 22
       xdr_ref: v22.0.0
-      core_ref: v22.0.0
+      core_ref: v22.1.0rc1
       horizon_ref: horizon-v22.0.1
       stellar_rpc_ref: v22.1.1
       friendbot_ref: horizon-v22.0.1