diff --git a/pkgs/development/tools/misc/dart-sass/default.nix b/pkgs/development/tools/misc/dart-sass/default.nix
index 6ca7e8f43987..6262260326ef 100644
--- a/pkgs/development/tools/misc/dart-sass/default.nix
+++ b/pkgs/development/tools/misc/dart-sass/default.nix
@@ -10,24 +10,24 @@
 }:
 
 let
-  embedded-protocol-version = "2.6.0";
+  embedded-protocol-version = "2.7.0";
 
   embedded-protocol = fetchFromGitHub {
     owner = "sass";
     repo = "sass";
     rev = "refs/tags/embedded-protocol-${embedded-protocol-version}";
-    hash = "sha256-pNQnbOKVxRW9AiPteuO2Gq6ejV5Yd9GTuxZSyC/0SlE=";
+    hash = "sha256-BQCQ4GE85teRkCY2iuvqFT4vyf6RzZ1ztoRhBCAwA4w=";
   };
 in
 buildDartApplication rec {
   pname = "dart-sass";
-  version = "1.75.0";
+  version = "1.77.0";
 
   src = fetchFromGitHub {
     owner = "sass";
     repo = pname;
     rev = version;
-    hash = "sha256-nj1CCg/eID5dmW/omIGQYNP/uOKNvMzgo3RLBGLULKI=";
+    hash = "sha256-x42T8nDmwktfsd89PS8jrSIw2Dc1hKwrZxSn7h7FqAs=";
   };
 
   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 dc96a67bd282..a3f10f435ae1 100644
--- a/pkgs/development/tools/misc/dart-sass/pubspec.lock.json
+++ b/pkgs/development/tools/misc/dart-sass/pubspec.lock.json
@@ -24,11 +24,11 @@
       "dependency": "direct dev",
       "description": {
         "name": "archive",
-        "sha256": "22600aa1e926be775fa5fe7e6894e7fb3df9efda8891c73f70fb3262399a432d",
+        "sha256": "ecf4273855368121b1caed0d10d4513c7241dfc813f7d3c8933b36622ae9b265",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "3.4.10"
+      "version": "3.5.1"
     },
     "args": {
       "dependency": "direct main",
@@ -134,11 +134,11 @@
       "dependency": "transitive",
       "description": {
         "name": "coverage",
-        "sha256": "8acabb8306b57a409bf4c83522065672ee13179297a6bb0cb9ead73948df7c76",
+        "sha256": "3945034e86ea203af7a056d98e98e42a5518fff200d6e8e6647e1886b07e936e",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "1.7.2"
+      "version": "1.8.0"
     },
     "crypto": {
       "dependency": "direct dev",
@@ -314,11 +314,11 @@
       "dependency": "transitive",
       "description": {
         "name": "json_annotation",
-        "sha256": "b10a7b2ff83d83c777edba3c6a0f97045ddadd56c944e1a23a3fdf43a1bf4467",
+        "sha256": "1ce844379ca14835a50d2f019a3099f419082cfdd231cd86a142af94dd5c6bb1",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "4.8.1"
+      "version": "4.9.0"
     },
     "lints": {
       "dependency": "direct dev",
@@ -364,11 +364,11 @@
       "dependency": "direct main",
       "description": {
         "name": "meta",
-        "sha256": "25dfcaf170a0190f47ca6355bdd4552cb8924b430512ff0cafb8db9bd41fe33b",
+        "sha256": "bdb68674043280c3428e9ec998512fb681678676b3c54e773629ffe74419f8c7",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "1.14.0"
+      "version": "1.15.0"
     },
     "mime": {
       "dependency": "transitive",
@@ -384,11 +384,11 @@
       "dependency": "transitive",
       "description": {
         "name": "native_stack_traces",
-        "sha256": "c797830b9910d13b0f4e70ddef15cde034214fe3bdb8092c4ea5ffad2f74013f",
+        "sha256": "64d2f4bcf3b69326fb9bc91b4dd3a06f94bb5bbc3a65e25ae6467ace0b34bfd3",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "0.5.6"
+      "version": "0.5.7"
     },
     "native_synchronization": {
       "dependency": "direct main",
@@ -460,16 +460,6 @@
       "source": "hosted",
       "version": "6.0.2"
     },
-    "pointycastle": {
-      "dependency": "transitive",
-      "description": {
-        "name": "pointycastle",
-        "sha256": "70fe966348fe08c34bf929582f1d8247d9d9408130723206472b4687227e4333",
-        "url": "https://pub.dev"
-      },
-      "source": "hosted",
-      "version": "3.8.0"
-    },
     "pool": {
       "dependency": "direct main",
       "description": {
@@ -594,11 +584,11 @@
       "dependency": "transitive",
       "description": {
         "name": "shelf_web_socket",
-        "sha256": "9ca081be41c60190ebcb4766b2486a7d50261db7bd0f5d9615f2d653637a84c1",
+        "sha256": "073c147238594ecd0d193f3456a5fe91c4b0abbcc68bf5cd95b36c4e194ac611",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "1.0.4"
+      "version": "2.0.0"
     },
     "source_map_stack_trace": {
       "dependency": "transitive",
@@ -684,11 +674,11 @@
       "dependency": "direct dev",
       "description": {
         "name": "test",
-        "sha256": "d87214d19fb311997d8128ec501a980f77cb240ac4e7e219accf452813ff473c",
+        "sha256": "d11b55850c68c1f6c0cf00eabded4e66c4043feaf6c0d7ce4a36785137df6331",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "1.25.3"
+      "version": "1.25.5"
     },
     "test_api": {
       "dependency": "transitive",
@@ -704,11 +694,11 @@
       "dependency": "transitive",
       "description": {
         "name": "test_core",
-        "sha256": "2236f70be1e5ab405c675e88c36935a87dad9e05a506b57dd5c0f617f5aebcb2",
+        "sha256": "4d070a6bc36c1c4e89f20d353bfd71dc30cdf2bd0e14349090af360a029ab292",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "0.6.1"
+      "version": "0.6.2"
     },
     "test_descriptor": {
       "dependency": "direct dev",
@@ -764,11 +754,11 @@
       "dependency": "transitive",
       "description": {
         "name": "vm_service",
-        "sha256": "a75f83f14ad81d5fe4b3319710b90dec37da0e22612326b696c9e1b8f34bbf48",
+        "sha256": "7475cb4dd713d57b6f7464c0e13f06da0d535d8b2067e188962a59bac2cf280b",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "14.2.0"
+      "version": "14.2.2"
     },
     "watcher": {
       "dependency": "direct main",
@@ -790,15 +780,25 @@
       "source": "hosted",
       "version": "0.5.1"
     },
+    "web_socket": {
+      "dependency": "transitive",
+      "description": {
+        "name": "web_socket",
+        "sha256": "bfe704c186c6e32a46f6607f94d079cd0b747b9a489fceeecc93cd3adb98edd5",
+        "url": "https://pub.dev"
+      },
+      "source": "hosted",
+      "version": "0.1.3"
+    },
     "web_socket_channel": {
       "dependency": "transitive",
       "description": {
         "name": "web_socket_channel",
-        "sha256": "58c6666b342a38816b2e7e50ed0f1e261959630becd4c879c4f26bfa14aa5a42",
+        "sha256": "a2d56211ee4d35d9b344d9d4ce60f362e4f5d1aafb988302906bd732bc731276",
         "url": "https://pub.dev"
       },
       "source": "hosted",
-      "version": "2.4.5"
+      "version": "3.0.0"
     },
     "webkit_inspection_protocol": {
       "dependency": "transitive",