diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b20c1b7..d3e0441 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -31,7 +31,7 @@ jobs:
           cargo install elf2uf2-rs
 
       - name: create uf2 image
-        run: elf2uf2-rs target/thumbv6m-none-eabi/debug/rppico-encoder-firm target/thumbv6m-none-eabi/debug/rppico-encoder-firm.uf2
+        run: elf2uf2-rs target/thumbv6m-none-eabi/release/rppico-encoder-firm target/thumbv6m-none-eabi/release/rppico-encoder-firm.uf2
 
       - name: Bump version and push tag
         id: tag_version