diff --git a/pyproject.toml b/pyproject.toml
index 2956741..2391e41 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ dependencies = [
     "numcodecs-wasm-bit-round~=0.3.0",
     "numcodecs-wasm-fixed-offset-scale~=0.3.0",
     "numcodecs-wasm-jpeg2000~=0.2.0",
-    "numcodecs-wasm-pco~=0.2.0",
+    "numcodecs-wasm-pco~=0.2.1",
     "numcodecs-wasm-round~=0.3.0",
     "numcodecs-wasm-sperr~=0.1.0",
     "numcodecs-wasm-sz3~=0.6.0",