diff --git a/pkgs/applications/misc/gollum/Gemfile.lock b/pkgs/applications/misc/gollum/Gemfile.lock
index 018b902294fe..91096ddc9173 100644
--- a/pkgs/applications/misc/gollum/Gemfile.lock
+++ b/pkgs/applications/misc/gollum/Gemfile.lock
@@ -2,17 +2,17 @@ GEM
   remote: https://rubygems.org/
   specs:
     backports (3.18.1)
-    concurrent-ruby (1.1.6)
+    concurrent-ruby (1.1.7)
     crass (1.0.6)
     execjs (2.7.0)
     ffi (1.13.1)
     gemojione (4.3.3)
       json
     github-markup (3.0.4)
-    gollum (5.1)
+    gollum (5.1.1)
       gemojione (~> 4.1)
       gollum-lib (~> 5.0)
-      kramdown (~> 2.1.0)
+      kramdown (~> 2.3)
       kramdown-parser-gfm (~> 1.0.0)
       mustache (>= 0.99.5, < 1.0.0)
       octicons (~> 8.5)
@@ -38,7 +38,8 @@ GEM
       mime-types (>= 1.15)
       rugged (~> 0.99)
     json (2.3.1)
-    kramdown (2.1.0)
+    kramdown (2.3.0)
+      rexml
     kramdown-parser-gfm (1.0.1)
       kramdown (~> 2.0)
     loofah (2.6.0)
@@ -63,7 +64,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.4)
-    rouge (3.21.0)
+    rouge (3.22.0)
     rss (0.2.9)
       rexml
     ruby2_keywords (0.0.2)
diff --git a/pkgs/applications/misc/gollum/gemset.nix b/pkgs/applications/misc/gollum/gemset.nix
index d7f837ed1fc3..45bf0e04d07f 100644
--- a/pkgs/applications/misc/gollum/gemset.nix
+++ b/pkgs/applications/misc/gollum/gemset.nix
@@ -14,10 +14,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "094387x4yasb797mv07cs3g6f08y56virc2rjcpb1k79rzaj3nhl";
+      sha256 = "1vnxrbhi7cq3p4y2v9iwd10v1c7l15is4var14hwnb2jip4fyjzz";
       type = "gem";
     };
-    version = "1.1.6";
+    version = "1.1.7";
   };
   crass = {
     groups = ["default"];
@@ -76,10 +76,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "06qc6flb2sik64ich3j4a9yky9cqsj77vdjff51wxi4lhd9ga6sk";
+      sha256 = "14i6y3ilv9l7cqvkawl75js26cfj1pd8cphhmq9lic95ajvdf371";
       type = "gem";
     };
-    version = "5.1";
+    version = "5.1.1";
   };
   gollum-lib = {
     dependencies = ["gemojione" "github-markup" "gollum-rugged_adapter" "loofah" "nokogiri" "octicons" "rouge" "twitter-text"];
@@ -114,14 +114,15 @@
     version = "2.3.1";
   };
   kramdown = {
+    dependencies = ["rexml"];
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1dl840bvx8d9nq6lg3mxqyvbiqnr6lk3jfsm6r8zhz7p5srmd688";
+      sha256 = "1vmw752c26ny2jwl0npn0gbyqwgz4hdmlpxnsld9qi9xhk5b1qh7";
       type = "gem";
     };
-    version = "2.1.0";
+    version = "2.3.0";
   };
   kramdown-parser-gfm = {
     dependencies = ["kramdown"];
@@ -286,10 +287,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1agrrmj88k9jkk36ra1ml2c1jffpp595pkxmcla74ac9ia09vn3s";
+      sha256 = "1wcz7i009wdbymlfsamagqi18m6ih8j60bii0k18f21g70r72i0m";
       type = "gem";
     };
-    version = "3.21.0";
+    version = "3.22.0";
   };
   rss = {
     dependencies = ["rexml"];