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
diff --git a/scripts/optimizer.sh b/scripts/optimizer.sh
index 5680828bc..67533a470 100755
--- a/scripts/optimizer.sh
+++ b/scripts/optimizer.sh
@@ -1,7 +1,7 @@
 :
 
 U="cosmwasm"
-V="0.12.8"
+V="0.12.13"
 
 M=$(uname -m)
 #M="x86_64" # Force Intel arch