diff --git a/scripts/ca-sha2.pem b/scripts/ca-sha2.pem
new file mode 100644
index 0000000000000000000000000000000000000000..ccf48a4de1f05f022931b3c18a9a812284d074d1
--- /dev/null
+++ b/scripts/ca-sha2.pem
@@ -0,0 +1,43 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
diff --git a/scripts/ca.pem b/scripts/ca.pem
deleted file mode 100644
index 960f2657be21aae603a6917266b2c6a67113406e..0000000000000000000000000000000000000000
--- a/scripts/ca.pem
+++ /dev/null
@@ -1,44 +0,0 @@
------BEGIN CERTIFICATE-----
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------END CERTIFICATE-----
diff --git a/scripts/provision.sh b/scripts/provision.sh
index d5e71082ee7c7384d7971114801220c3e25c0d23..0bc94fbcd93932c0087ed69a0df64592d2c9c762 100755
--- a/scripts/provision.sh
+++ b/scripts/provision.sh
@@ -231,7 +231,7 @@ function generate_certificate () {
   cat > ${TLS_FOLDER}/CSR/${arg_u}.crt
 
   info "Concat certificate, CA and key into pem file."
-  cat ${TLS_FOLDER}/CSR/${arg_u}.crt /data/indiehosters/scripts/sub.class2.server.ca.pem /data/indiehosters/scripts/ca.pem ${TLS_FOLDER}/CSR/${arg_u}.key > ${TLS_FOLDER}/${arg_u}.pem
+  cat ${TLS_FOLDER}/CSR/${arg_u}.crt /data/indiehosters/scripts/sub.class2.server.sha2.ca.pem /data/indiehosters/scripts/ca-sha2.pem ${TLS_FOLDER}/CSR/${arg_u}.key > ${TLS_FOLDER}/${arg_u}.pem
 }
 
 function configure_dns () {
diff --git a/scripts/sub.class1.server.ca.pem b/scripts/sub.class1.server.sha2.ca.pem
similarity index 100%
rename from scripts/sub.class1.server.ca.pem
rename to scripts/sub.class1.server.sha2.ca.pem
diff --git a/scripts/sub.class2.server.ca.pem b/scripts/sub.class2.server.sha2.ca.pem
similarity index 100%
rename from scripts/sub.class2.server.ca.pem
rename to scripts/sub.class2.server.sha2.ca.pem