diff --git a/pkgs/development/tools/misc/dart-sass/default.nix b/pkgs/development/tools/misc/dart-sass/default.nix
index f3e30557ae9b..bf6bc7eb3283 100644
--- a/pkgs/development/tools/misc/dart-sass/default.nix
+++ b/pkgs/development/tools/misc/dart-sass/default.nix
@@ -21,13 +21,13 @@ let
 in
 buildDartApplication rec {
   pname = "dart-sass";
-  version = "1.77.4";
+  version = "1.77.6";
 
   src = fetchFromGitHub {
     owner = "sass";
     repo = pname;
     rev = version;
-    hash = "sha256-xHOZDeK6xYnfrb6yih6jzRDZLRvyp0EeKZynEq3A4aI=";
+    hash = "sha256-GiZbx60HtyFTsargh0UVhjzOwlw3VWkhUEaX0s2ehos=";
   };
 
   pubspecLock = lib.importJSON ./pubspec.lock.json;
diff --git a/pkgs/development/tools/misc/dart-sass/pubspec.lock.json b/pkgs/development/tools/misc/dart-sass/pubspec.lock.json
index da5e7ea435f1..8c3f3c83dce3 100644
--- a/pkgs/development/tools/misc/dart-sass/pubspec.lock.json
+++ b/pkgs/development/tools/misc/dart-sass/pubspec.lock.json
@@ -674,31 +674,31 @@
       "dependency": "direct dev",
       "description": {
         "name": "test",
-        "sha256": "d11b55850c68c1f6c0cf00eabded4e66c4043feaf6c0d7ce4a36785137df6331",
+        "sha256": "7ee44229615f8f642b68120165ae4c2a75fe77ae2065b1e55ae4711f6cf0899e",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "1.25.5"
+      "version": "1.25.7"
     },
     "test_api": {
       "dependency": "transitive",
       "description": {
         "name": "test_api",
-        "sha256": "2419f20b0c8677b2d67c8ac4d1ac7372d862dc6c460cdbb052b40155408cd794",
+        "sha256": "5b8a98dafc4d5c4c9c72d8b31ab2b23fc13422348d2997120294d3bac86b4ddb",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "0.7.1"
+      "version": "0.7.2"
     },
     "test_core": {
       "dependency": "transitive",
       "description": {
         "name": "test_core",
-        "sha256": "4d070a6bc36c1c4e89f20d353bfd71dc30cdf2bd0e14349090af360a029ab292",
+        "sha256": "55ea5a652e38a1dfb32943a7973f3681a60f872f8c3a05a14664ad54ef9c6696",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "0.6.2"
+      "version": "0.6.4"
     },
     "test_descriptor": {
       "dependency": "direct dev",
@@ -754,11 +754,11 @@
       "dependency": "transitive",
       "description": {
         "name": "vm_service",
-        "sha256": "360c4271613beb44db559547d02f8b0dc044741d0eeb9aa6ccdb47e8ec54c63a",
+        "sha256": "f652077d0bdf60abe4c1f6377448e8655008eef28f128bc023f7b5e8dfeb48fc",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "14.2.3"
+      "version": "14.2.4"
     },
     "watcher": {
       "dependency": "direct main",