diff --git a/README.md b/README.md
index ac2bc433c..12b2d787d 100644
--- a/README.md
+++ b/README.md
@@ -104,7 +104,7 @@ To compile all the contracts, run the following in the repo root:
 docker run --rm -v "$(pwd)":/code \
   --mount type=volume,source="$(basename "$(pwd)")_cache",target=/code/target \
   --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
-  cosmwasm/workspace-optimizer:0.12.11
+  cosmwasm/workspace-optimizer:0.12.13
 ```
 
 This will compile all packages in the `contracts` directory and output the stripped and optimized wasm code under the