diff --git a/gnu/packages/bioinformatics.scm b/gnu/packages/bioinformatics.scm
index 3455029ed1..c5a1215442 100644
--- a/gnu/packages/bioinformatics.scm
+++ b/gnu/packages/bioinformatics.scm
@@ -1490,7 +1490,6 @@ (define-public ciri-long
      `(("circtools" ,circtools)
        ("python-biopython" ,python-biopython)
        ("python-bwapy" ,python-bwapy)
-       ("python-cython" ,python-cython)
        ("python-levenshtein" ,python-levenshtein)
        ("python-mappy" ,python-mappy)
        ("python-numpy" ,python-numpy)
@@ -1500,7 +1499,8 @@ (define-public ciri-long
        ("python-scikit-learn" ,python-scikit-learn)
        ("python-scipy" ,python-scipy)))
     (native-inputs
-     `(("python-nose" ,python-nose)
+     `(("python-cython" ,python-cython)
+       ("python-nose" ,python-nose)
        ("python-setuptools" ,python-setuptools)))
     (home-page "https://ciri-cookbook.readthedocs.io/")
     (synopsis "Circular RNA identification for Nanopore sequencing")