diff --git a/gnu/packages/python-crypto.scm b/gnu/packages/python-crypto.scm
index ecf82f2078..f3f104df8d 100644
--- a/gnu/packages/python-crypto.scm
+++ b/gnu/packages/python-crypto.scm
@@ -56,6 +56,7 @@
   #:use-module (gnu packages python-check)
   #:use-module (gnu packages python-web)
   #:use-module (gnu packages python-xyz)
+  #:use-module (gnu packages swig)
   #:use-module (gnu packages time)
   #:use-module (gnu packages tls)
   #:use-module ((guix licenses) #:prefix license:)
@@ -1014,6 +1015,7 @@ in userspace)
         (base32 "09yirf3w77w6f49q6nxhrjm9c3a4y9s30s1k09chqrw8zdgx8sjc"))))
     (build-system python-build-system)
     (inputs `(("openssl" ,openssl)))
+    (native-inputs `(("swig" ,swig)))
     (home-page "https://gitlab.com/m2crypto/m2crypto")
     (synopsis "Python crypto and TLS toolkit")
     (description "@code{M2Crypto} is a complete Python wrapper for OpenSSL