diff --git a/dockerfiles/ci-unified/Dockerfile b/dockerfiles/ci-unified/Dockerfile
index 2476361f..b10a99b3 100644
--- a/dockerfiles/ci-unified/Dockerfile
+++ b/dockerfiles/ci-unified/Dockerfile
@@ -163,6 +163,9 @@ RUN	cargo install cargo-dylint dylint-link
 RUN	cargo install --git https://github.com/paritytech/cargo-contract \
     --locked --branch master --force
 
+# contracts ci
+RUN cargo install subkey
+
 # contracts ci
 # Download the latest `substrate-contracts-node` binary
 RUN	curl -L -o substrate-contracts-node.zip 'https://gitlab.parity.io/parity/mirrors/substrate-contracts-node/-/jobs/artifacts/main/download?job=build-linux' && \