diff --git a/pkgs/tools/text/bcat/Gemfile.lock b/pkgs/tools/text/bcat/Gemfile.lock
index c39ebc27910..fa67e6e28db 100644
--- a/pkgs/tools/text/bcat/Gemfile.lock
+++ b/pkgs/tools/text/bcat/Gemfile.lock
@@ -3,7 +3,7 @@ GEM
   specs:
     bcat (0.6.2)
       rack (~> 1.0)
-    rack (1.6.8)
+    rack (1.6.11)
 
 PLATFORMS
   ruby
@@ -12,4 +12,4 @@ DEPENDENCIES
   bcat
 
 BUNDLED WITH
-   1.15.4
+   1.16.4
diff --git a/pkgs/tools/text/bcat/gemset.nix b/pkgs/tools/text/bcat/gemset.nix
index 0654e35399d..744c0e6e107 100644
--- a/pkgs/tools/text/bcat/gemset.nix
+++ b/pkgs/tools/text/bcat/gemset.nix
@@ -11,9 +11,9 @@
   rack = {
     source = {
       remotes = ["http://rubygems.org"];
-      sha256 = "19m7aixb2ri7p1n0iqaqx8ldi97xdhvbxijbyrrcdcl6fv5prqza";
+      sha256 = "1g9926ln2lw12lfxm4ylq1h6nl0rafl10za3xvjzc87qvnqic87f";
       type = "gem";
     };
-    version = "1.6.8";
+    version = "1.6.11";
   };
 }
\ No newline at end of file