diff --git a/cumulus/.github/workflows/srtool.yml b/cumulus/.github/workflows/srtool.yml
index 6941a79a01..ae473b4813 100644
--- a/cumulus/.github/workflows/srtool.yml
+++ b/cumulus/.github/workflows/srtool.yml
@@ -1,7 +1,7 @@
 name: Srtool build
 
 env:
-  SUBWASM_VERSION: 0.17.0
+  SUBWASM_VERSION: 0.20.0
 
 on:
   push: