diff --git a/pkgs/tools/misc/html-proofer/Gemfile.lock b/pkgs/tools/misc/html-proofer/Gemfile.lock
index a998ccb3f63..615eea5a783 100644
--- a/pkgs/tools/misc/html-proofer/Gemfile.lock
+++ b/pkgs/tools/misc/html-proofer/Gemfile.lock
@@ -6,7 +6,7 @@ GEM
     ethon (0.12.0)
       ffi (>= 1.3.0)
     ffi (1.12.2)
-    html-proofer (3.15.1)
+    html-proofer (3.15.2)
       addressable (~> 2.3)
       mercenary (~> 0.3)
       nokogumbo (~> 2.0)
@@ -16,7 +16,7 @@ GEM
       yell (~> 2.0)
     mercenary (0.4.0)
     mini_portile2 (2.4.0)
-    nokogiri (1.10.8)
+    nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     nokogumbo (2.0.2)
       nokogiri (~> 1.8, >= 1.8.4)
diff --git a/pkgs/tools/misc/html-proofer/gemset.nix b/pkgs/tools/misc/html-proofer/gemset.nix
index 5ddb6accb94..2e3b3a10b3b 100644
--- a/pkgs/tools/misc/html-proofer/gemset.nix
+++ b/pkgs/tools/misc/html-proofer/gemset.nix
@@ -37,10 +37,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0krd80ga7qcms469l55jbm711a7ph2lmyn88l929nhbxc7sgm81g";
+      sha256 = "1b7wx2hnwnml3y10x6yxybl3hy973n2ifq3hbqh0jd72bqs615wp";
       type = "gem";
     };
-    version = "3.15.1";
+    version = "3.15.2";
   };
   mercenary = {
     groups = ["default"];
@@ -68,10 +68,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1yi8j8hwrlc3rg5v3w52gxndmwifyk7m732q9yfbal0qajqbh1h8";
+      sha256 = "12j76d0bp608932xkzmfi638c7aqah57l437q8494znzbj610qnm";
       type = "gem";
     };
-    version = "1.10.8";
+    version = "1.10.9";
   };
   nokogumbo = {
     dependencies = ["nokogiri"];