diff --git a/changemaker-control-panel/Dockerfile.api b/changemaker-control-panel/Dockerfile.api
index a653bce7..d5c8b8e9 100644
--- a/changemaker-control-panel/Dockerfile.api
+++ b/changemaker-control-panel/Dockerfile.api
@@ -1,7 +1,7 @@
 FROM node:20-alpine
 
-# Install Docker CLI (needed to manage instance containers) + rsync (for provisioning)
-RUN apk add --no-cache docker-cli docker-cli-compose rsync
+# Install Docker CLI (needed to manage instance containers), rsync (provisioning), openssl (cert generation)
+RUN apk add --no-cache docker-cli docker-cli-compose rsync openssl
 
 WORKDIR /app