diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index 1ad0cb12ec..dc620b13a1 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -2177,7 +2177,7 @@ (define-public python-arviz
 (define-public python-pymc
   (package
     (name "python-pymc")
-    (version "5.5.0")
+    (version "5.6.1")
     (source (origin
               (method git-fetch)        ; no tests in PyPI
               (uri (git-reference
@@ -2186,7 +2186,7 @@ (define-public python-pymc
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "077xigv3lfcn9fqc14rsnam4v95fmqk2wpzfrgj08vg8m7f69wdj"))))
+                "0in5lw55camvgd6b4hiw4gr11bdy96jc74z1gvsd0xj7cfxvc043"))))
     (build-system pyproject-build-system)
     (arguments
      (list #:tests? #f ; tests are too computationally intensive