diff --git a/Dockerfile b/Dockerfile
index 8cfda33..0b5c54a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,6 +10,7 @@ ENV RPMBUILD_BASE_DIR=/drone/src
 
 RUN yum install -q -y \
     dash \
+    ca-certificates \
     gcc gcc-c++ \
     gnutls \
     gnutls-devel \