diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index 8bcdac1fc7..17595fd505 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -14223,13 +14223,13 @@ for the reconstruction of gene regulatory networks.")
 (define-public r-pscl
   (package
     (name "r-pscl")
-    (version "1.5.5")
+    (version "1.5.5.1")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "pscl" version))
        (sha256
-        (base32 "0vzf5wazs92bhqhqd66v3vwmbfmnh67gb2466g1xxawim649nk05"))))
+        (base32 "0nwdwyxmy4baiwjjvrypdclzhpbsipik1rkrvgag4y2csg1nf4v1"))))
     (build-system r-build-system)
     (propagated-inputs
      (list r-mass))