diff --git a/pkgs/development/r-modules/cran-packages.nix b/pkgs/development/r-modules/cran-packages.nix
index 6068fce10d53..4aa089da4980 100644
--- a/pkgs/development/r-modules/cran-packages.nix
+++ b/pkgs/development/r-modules/cran-packages.nix
@@ -2670,7 +2670,7 @@ let self = _self // overrides; _self = with self; {
   marqLevAlg = derive { name="marqLevAlg"; version="1.1"; sha256="1wmqi68g0flrlmj87vwgvyxap0miss0n42qiiw7ypyj4jw9kwm8j"; depends=[]; };
   MARSS = derive { name="MARSS"; version="3.9"; sha256="0vn8axzz0nqdcl3w00waghz68z8pvfm764w11kxxigvjpw2plj31"; depends=[nlme mvtnorm KFAS]; };
   maSAE = derive { name="maSAE"; version="0.1-2"; sha256="18a1zbfmjhrmi3fgqd7vaicpsca59kp8r1003pwl7l4032p32fxk"; depends=[]; };
-  MASS = derive { name="MASS"; version="7.3-32"; sha256="1nmd5b9yillca3gczq82n5kpxslkvdhq0nl3cw2wp9s9vax29ymh"; depends=[]; };
+  MASS = derive { name="MASS"; version="7.3-33"; sha256="1bq005zxyc7842z4cz5ilhh917clfdmhg5czfq6plkdgwq8nfhlk"; depends=[]; };
   MASSI = derive { name="MASSI"; version="1.1"; sha256="13kavfsm48qq9zyp10scfjcgrk0x2n4my7cz2xy78s14knlrks5y"; depends=[fpc gplots]; };
   MASSTIMATE = derive { name="MASSTIMATE"; version="1.1"; sha256="10hs2mprdfa747sz2bjy29jixblbnyb744wxf8gh4jq3d5f5xpiq"; depends=[epicalc]; };
   MasterBayes = derive { name="MasterBayes"; version="2.51"; sha256="0mbvhn6yspralmlajimdin14hszh78m0bxb3zdxd73xhjqxl4ixk"; depends=[coda genetics gtools kinship2]; };