diff --git a/pkgs/servers/monitoring/riemann-dash/Gemfile.lock b/pkgs/servers/monitoring/riemann-dash/Gemfile.lock
index 1bfd80a897d..00375fa4e30 100644
--- a/pkgs/servers/monitoring/riemann-dash/Gemfile.lock
+++ b/pkgs/servers/monitoring/riemann-dash/Gemfile.lock
@@ -3,7 +3,7 @@ GEM
   specs:
     erubis (2.7.0)
     multi_json (1.3.6)
-    rack (1.6.4)
+    rack (1.6.11)
     rack-protection (1.5.3)
       rack
     riemann-dash (0.2.12)
@@ -27,4 +27,4 @@ DEPENDENCIES
   riemann-dash (= 0.2.12)
 
 BUNDLED WITH
-   1.11.2
+   1.16.4
diff --git a/pkgs/servers/monitoring/riemann-dash/gemset.nix b/pkgs/servers/monitoring/riemann-dash/gemset.nix
index 8a4d3ba58cb..9298312f90e 100644
--- a/pkgs/servers/monitoring/riemann-dash/gemset.nix
+++ b/pkgs/servers/monitoring/riemann-dash/gemset.nix
@@ -16,10 +16,10 @@
   rack = {
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "09bs295yq6csjnkzj7ncj50i6chfxrhmzg1pk6p0vd2lb9ac8pj5";
+      sha256 = "1g9926ln2lw12lfxm4ylq1h6nl0rafl10za3xvjzc87qvnqic87f";
       type = "gem";
     };
-    version = "1.6.4";
+    version = "1.6.11";
   };
   rack-protection = {
     dependencies = ["rack"];
@@ -30,6 +30,7 @@
     version = "1.5.3";
   };
   riemann-dash = {
+    dependencies = ["erubis" "multi_json" "sass" "sinatra" "webrick"];
     source = {
       remotes = ["https://rubygems.org"];
       sha256 = "1y2vh9vcl21b6k2wqgz1y8bbcrl07r43s6q2vkgp35z1b28xcszy";
@@ -46,6 +47,7 @@
     version = "3.4.22";
   };
   sinatra = {
+    dependencies = ["rack" "rack-protection" "tilt"];
     source = {
       remotes = ["https://rubygems.org"];
       sha256 = "1b81kbr65mmcl9cdq2r6yc16wklyp798rxkgmm5pr9fvsj7jwmxp";