diff --git a/docker/Dockerfile.step-ca b/docker/Dockerfile.step-ca
index b627bbe78..a8211acd5 100644
--- a/docker/Dockerfile.step-ca
+++ b/docker/Dockerfile.step-ca
@@ -25,6 +25,9 @@ COPY --from=rustbuilder /src/target/release/rusty-jwt-cli /usr/local/bin/rusty-j
 
 USER root
 RUN apk add --no-cache libcap && setcap CAP_NET_BIND_SERVICE=+eip /usr/local/bin/step-ca
+RUN mkdir -p /usr/local/share/ca-certificates
+COPY --chmod 644 docker/r3.crt /usr/local/share/ca-certificates
+RUN /usr/sbin/update-ca-certificates
 USER step
 
 ENV CONFIGPATH="/home/step/config/ca.json"
diff --git a/docker/r3.crt b/docker/r3.crt
new file mode 100644
index 000000000..43b222a60
--- /dev/null
+++ b/docker/r3.crt
@@ -0,0 +1,30 @@
+-----BEGIN CERTIFICATE-----
+MIIFFjCCAv6gAwIBAgIRAJErCErPDBinU/bWLiWnX1owDQYJKoZIhvcNAQELBQAw
+TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh
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+hCExroL1+7mryIkXPeFM5TgO9r0rvZaBFOvV2z0gp35Z0+L4WPlbuEjN/lxPFin+
+HlUjr8gRsI3qfJOQFy/9rKIJR0Y/8Omwt/8oTWgy1mdeHmmjk7j1nYsvC9JSQ6Zv
+MldlTTKB3zhThV1+XWYp6rjd5JW1zbVWEkLNxE7GJThEUG3szgBVGP7pSWTUTsqX
+nLRbwHOoq7hHwg==
+-----END CERTIFICATE-----