diff --git a/gnu/packages/crypto.scm b/gnu/packages/crypto.scm
index c3d3e3658c..1f5bfc1631 100644
--- a/gnu/packages/crypto.scm
+++ b/gnu/packages/crypto.scm
@@ -757,7 +757,10 @@ (define-public botan
                        ;; Otherwise, the `botan` executable cannot find
                        ;; libbotan.
                        (string-append "--ldflags=-Wl,-rpath=" lib)
+
+                       "--with-os-feature=getentropy"
                        "--with-rst2man"
+
                        ;; Recommended by upstream
                        "--with-zlib" "--with-bzip2" "--with-sqlite3"))))
          (replace 'check