diff --git a/.github/workflows/zxc-build-library.yaml b/.github/workflows/zxc-build-library.yaml
index 5e8ee0b79..d93ed2adc 100644
--- a/.github/workflows/zxc-build-library.yaml
+++ b/.github/workflows/zxc-build-library.yaml
@@ -196,7 +196,7 @@ jobs:
 
       - name: Prepare Hiero Solo
         id: solo
-        uses: hiero-ledger/hiero-solo-action@328bc84c3b00a990a151418144fd682a4eb76ea6 # v0.19.0
+        uses: hiero-ledger/hiero-solo-action@c397dc8f75a4d24ae0be621529d7f9dfe8a9f460 # v0.21.0
         with:
           soloVersion: v0.65.0
           installMirrorNode: true