diff --git a/gnu/packages/algebra.scm b/gnu/packages/algebra.scm
index 0d7d826cb0..72b1c8da27 100644
--- a/gnu/packages/algebra.scm
+++ b/gnu/packages/algebra.scm
@@ -470,7 +470,7 @@ (define-public flint
 (define-public arb
   (package
     (name "arb")
-    (version "2.21.1")
+    (version "2.22.1")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -479,7 +479,7 @@ (define-public arb
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "1lmcl122qy6mr1g1y65bm7dk9fj0sym7gzmvar5vdgk7ln03c5iq"))))
+                "0qcyf8a7w95yxap0r3sb7xibk53nbs5kkidja3ljvqpbpk5xvpax"))))
     (build-system gnu-build-system)
     (propagated-inputs
      (list flint))               ; flint.h is included by arf.h