diff --git a/pkgs/development/tools/sass/Gemfile.lock b/pkgs/development/tools/sass/Gemfile.lock
index ecd1404e3398..1b99dd3a1361 100644
--- a/pkgs/development/tools/sass/Gemfile.lock
+++ b/pkgs/development/tools/sass/Gemfile.lock
@@ -1,11 +1,11 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    ffi (1.9.23)
+    ffi (1.10.0)
     rb-fsevent (0.10.3)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
-    sass (3.5.6)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
+    sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -18,4 +18,4 @@ DEPENDENCIES
   sass
 
 BUNDLED WITH
-   1.14.6
+   1.17.2
diff --git a/pkgs/development/tools/sass/default.nix b/pkgs/development/tools/sass/default.nix
index 96354acaec48..c204ba8cd406 100644
--- a/pkgs/development/tools/sass/default.nix
+++ b/pkgs/development/tools/sass/default.nix
@@ -9,7 +9,7 @@ bundlerApp {
     description = "Tools and Ruby libraries for the CSS3 extension languages: Sass and SCSS";
     homepage    = https://sass-lang.com;
     license     = licenses.mit;
-    maintainers = [ maintainers.romildo ];
+    maintainers = with maintainers; [ romildo manveru ];
     platforms   = platforms.unix;
   };
 }
diff --git a/pkgs/development/tools/sass/gemset.nix b/pkgs/development/tools/sass/gemset.nix
index bd25281f14fc..f4fdc899abf8 100644
--- a/pkgs/development/tools/sass/gemset.nix
+++ b/pkgs/development/tools/sass/gemset.nix
@@ -1,13 +1,17 @@
 {
   ffi = {
+    groups = ["default"];
+    platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0zw6pbyvmj8wafdc7l5h7w20zkp1vbr2805ql5d941g2b20pk4zr";
+      sha256 = "0j8pzj8raxbir5w5k6s7a042sb5k02pg0f8s4na1r5lan901j00p";
       type = "gem";
     };
-    version = "1.9.23";
+    version = "1.10.0";
   };
   rb-fsevent = {
+    groups = ["default"];
+    platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
       sha256 = "1lm1k7wpz69jx7jrc92w3ggczkjyjbfziq5mg62vjnxmzs383xx8";
@@ -17,24 +21,30 @@
   };
   rb-inotify = {
     dependencies = ["ffi"];
+    groups = ["default"];
+    platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0yfsgw5n7pkpyky6a9wkf1g9jafxb0ja7gz0qw0y14fd2jnzfh71";
+      sha256 = "1fs7hxm9g6ywv2yih83b879klhc4fs8i0p9166z795qmd77dk0a4";
       type = "gem";
     };
-    version = "0.9.10";
+    version = "0.10.0";
   };
   sass = {
     dependencies = ["sass-listen"];
+    groups = ["default"];
+    platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "19wyzp9qsg8hdkkxlsv713w0qmy66qrdp0shj42587ssx4qhrlag";
+      sha256 = "0p95lhs0jza5l7hqci1isflxakz83xkj97lkvxl919is0lwhv2w0";
       type = "gem";
     };
-    version = "3.5.6";
+    version = "3.7.4";
   };
   sass-listen = {
     dependencies = ["rb-fsevent" "rb-inotify"];
+    groups = ["default"];
+    platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
       sha256 = "0xw3q46cmahkgyldid5hwyiwacp590zj2vmswlll68ryvmvcp7df";