diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index 30c65ff..14cf5ae 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -565,6 +565,9 @@
 authorityKeyId_subjectKeyId_tag_malformed.crt.der: authorityKeyId_subjectKeyId.crt.der
 	hexdump -ve '1/1 "%.2X"' $< | sed "s/0414A505E864B8DCDF600F50124D60A864AF4D8B4393/0114A505E864B8DCDF600F50124D60A864AF4D8B4393/" | xxd -r -p > $@
 
+authorityKeyId_subjectKeyId_tag_len_malformed.crt.der: authorityKeyId_subjectKeyId.crt.der
+	hexdump -ve '1/1 "%.2X"' $< | sed "s/0414A505E864B8DCDF600F50124D60A864AF4D8B4393/0413A505E864B8DCDF600F50124D60A864AF4D8B4393/" | xxd -r -p > $@
+
 authorityKeyId_subjectKeyId_length_malformed.crt.der: authorityKeyId_subjectKeyId.crt.der
 	hexdump -ve '1/1 "%.2X"' $< | sed "s/306D8014A505E864B8DC/306C8014A505E864B8DC/" | xxd -r -p > $@
 
@@ -583,6 +586,12 @@
 authorityKeyId_subjectKeyId_issuer_tag2_malformed.crt.der: authorityKeyId_subjectKeyId.crt.der
 	hexdump -ve '1/1 "%.2X"' $< | sed "s/A43D303B310B30090603/003D303B310B30090603/" | xxd -r -p > $@
 
+authorityKeyId_subjectKeyId_sn_tag_malformed.crt.der: authorityKeyId_subjectKeyId.crt.der
+	hexdump -ve '1/1 "%.2X"' $< | sed "s/8214680430CD074DE63F/8114680430CD074DE63F/" | xxd -r -p > $@
+
+authorityKeyId_subjectKeyId_sn_len_malformed.crt.der: authorityKeyId_subjectKeyId.crt.der
+	hexdump -ve '1/1 "%.2X"' $< | sed "s/8214680430CD074DE63F/8213680430CD074DE63F/" | xxd -r -p > $@
+
 ################################################################
 #### Generate various RSA keys
 ################################################################