diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index 0fbdfe513..fa30cf57b 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -739,7 +739,7 @@ all_final += $(keys_rsa_base)
 ### PKCS1-encoded, plaintext RSA keys in derived forms
 
 rsa_pkcs1_%.der: rsa_pkcs1_%.pem
-	$(OPENSSL) rsa -inform PEM -in $< -outform DER -out $@
+	$(OPENSSL) pkey -inform PEM -in $< -outform DER -out $@
 all_final += $(keys_rsa_base:.pem=.der)
 
 ###
diff --git a/tests/data_files/rsa_pkcs1_1024_clear.der b/tests/data_files/rsa_pkcs1_1024_clear.der
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diff --git a/tests/data_files/rsa_pkcs1_2048_clear.der b/tests/data_files/rsa_pkcs1_2048_clear.der
index 137395e2a..667051bd8 100644
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diff --git a/tests/data_files/rsa_pkcs1_4096_clear.der b/tests/data_files/rsa_pkcs1_4096_clear.der
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diff --git a/tests/data_files/rsa_pkcs1_768_clear.der b/tests/data_files/rsa_pkcs1_768_clear.der
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diff --git a/tests/data_files/rsa_pkcs1_769_clear.der b/tests/data_files/rsa_pkcs1_769_clear.der
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diff --git a/tests/data_files/rsa_pkcs1_770_clear.der b/tests/data_files/rsa_pkcs1_770_clear.der
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diff --git a/tests/data_files/rsa_pkcs1_776_clear.der b/tests/data_files/rsa_pkcs1_776_clear.der
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diff --git a/tests/data_files/rsa_pkcs1_784_clear.der b/tests/data_files/rsa_pkcs1_784_clear.der
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