diff --git a/.github/workflows/build-future.yml b/.github/workflows/build-future.yml
index 2e2935fa..c03bc5fe 100644
--- a/.github/workflows/build-future.yml
+++ b/.github/workflows/build-future.yml
@@ -33,7 +33,7 @@ jobs:
       tag: ${{ inputs.tag-prefix }}future-amd64
       protocol_version_default: 22
       xdr_ref: v22.0.0-rc.1.1
-      core_ref: v22.0.0rc2
+      core_ref: 92923c2db65de63f6524bf6931dd14b05aa488bb
       horizon_ref: horizon-v22.0.0-rc2
       soroban_rpc_ref: v22.0.0-rc2
       friendbot_ref: horizon-v22.0.0-rc2
@@ -57,7 +57,7 @@ jobs:
       tag: ${{ inputs.tag-prefix }}future-arm64
       protocol_version_default: 22
       xdr_ref: v22.0.0-rc.1.1
-      core_ref: v22.0.0rc2
+      core_ref: 92923c2db65de63f6524bf6931dd14b05aa488bb
       horizon_ref: horizon-v22.0.0-rc2
       soroban_rpc_ref: v22.0.0-rc2
       friendbot_ref: horizon-v22.0.0-rc2
diff --git a/.github/workflows/build-testing.yml b/.github/workflows/build-testing.yml
index 695b66bc..352d257f 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-rc.1.1
-      core_ref: v22.0.0rc2
+      core_ref: 92923c2db65de63f6524bf6931dd14b05aa488bb
       horizon_ref: horizon-v22.0.0-rc2
       soroban_rpc_ref: v22.0.0-rc2
       friendbot_ref: horizon-v22.0.0-rc2
@@ -59,7 +59,7 @@ jobs:
       tag: ${{ inputs.tag-prefix }}testing-arm64
       protocol_version_default: 22
       xdr_ref: v22.0.0-rc.1.1
-      core_ref: v22.0.0rc2
+      core_ref: 92923c2db65de63f6524bf6931dd14b05aa488bb
       horizon_ref: horizon-v22.0.0-rc2
       soroban_rpc_ref: v22.0.0-rc2
       friendbot_ref: horizon-v22.0.0-rc2
diff --git a/Makefile b/Makefile
index 56f419b4..a7ed3bd9 100644
--- a/Makefile
+++ b/Makefile
@@ -34,7 +34,7 @@ build-testing:
 	$(MAKE) build TAG=testing \
 	    PROTOCOL_VERSION_DEFAULT=22 \
 		XDR_REF=v22.0.0-rc.1.1 \
-		CORE_REF=v22.0.0rc2 \
+		CORE_REF=92923c2db65de63f6524bf6931dd14b05aa488bb \
 		HORIZON_REF=horizon-v22.0.0-rc2 \
 		SOROBAN_RPC_REF=v22.0.0-rc2 \
 		FRIENDBOT_REF=horizon-v22.0.0-rc2
@@ -43,7 +43,7 @@ build-future:
 	$(MAKE) build TAG=future \
 		PROTOCOL_VERSION_DEFAULT=22 \
 		XDR_REF=v22.0.0-rc.1.1 \
-		CORE_REF=v22.0.0rc2 \
+		CORE_REF=92923c2db65de63f6524bf6931dd14b05aa488bb \
 		HORIZON_REF=horizon-v22.0.0-rc2 \
 		SOROBAN_RPC_REF=v22.0.0-rc2 \
 		FRIENDBOT_REF=horizon-v22.0.0-rc2