diff --git a/pkgs/top-level/ruby-packages.nix b/pkgs/top-level/ruby-packages.nix
index dcaa14483eaf8..4bf3a92264d2b 100644
--- a/pkgs/top-level/ruby-packages.nix
+++ b/pkgs/top-level/ruby-packages.nix
@@ -3148,10 +3148,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1ik3in0957l9s6iwdm3nsk4za072cj27riiqgpx6zzcd22flbw3s";
+      sha256 = "1j9p66pmfgxnzp76ksssyfyqqrg7281dyi3xyknl3wwraaw7a66p";
       type = "gem";
     };
-    version = "3.3.6";
+    version = "3.3.9";
   };
   rmagick = {
     dependencies = ["observer" "pkg-config"];