diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index 93b5e83..26f5d89 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -1062,10 +1062,14 @@
 	$(OPENSSL) req -new -subj "/C=NL/O=PolarSSL/CN=localhost" \
 					-key $< -out $@
 all_intermediate += server5.csr
-server5.crt: server5.csr
-	$(OPENSSL) x509 -req -CA $(test_ca_crt_cat21) -CAkey $(test_ca_key_file_ec) \
-				-extfile server5.crt.openssl.v3_ext -set_serial 9 -days 3650 -sha256 -in $< -out $@
-all_final += server5.crt
+server5.crt: server5-sha256.crt
+	cp $< $@
+all_intermediate += server5-sha256.crt
+server5-sha%.crt: server5.csr $(test_ca_crt_file_ec) $(test_ca_key_file_ec) server5.crt.openssl.v3_ext
+	$(OPENSSL) x509 -req -CA $(test_ca_crt_file_ec) -CAkey $(test_ca_key_file_ec) \
+				-extfile server5.crt.openssl.v3_ext -set_serial 9 -days 3650 \
+				-sha$(@:server5-sha%.crt=%) -in $< -out $@
+all_final += server5.crt server5-sha1.crt server5-sha224.crt server5-sha384.crt server5-sha512.crt
 
 server5-badsign.crt: server5.crt
 	{ head -n-2 $<; tail -n-2 $< | sed -e '1s/0\(=*\)$$/_\1/' -e '1s/[^_=]\(=*\)$$/0\1/' -e '1s/_/1/'; } > $@