diff --git a/pkgs/applications/networking/browsers/chromium/common.nix b/pkgs/applications/networking/browsers/chromium/common.nix
index 2cf3556e7ea3..7e95da747d1e 100644
--- a/pkgs/applications/networking/browsers/chromium/common.nix
+++ b/pkgs/applications/networking/browsers/chromium/common.nix
@@ -165,14 +165,10 @@ let
       ./patches/widevine-79.patch # For bundling Widevine (DRM), might be replaceable via bundle_widevine_cdm=true in gnFlags
       # Fix the build by adding a missing dependency (s. https://crbug.com/1197837):
       ./patches/fix-missing-atspi2-dependency.patch
-    ] ++ optionals (chromiumVersionAtLeast "91") [
       ./patches/closure_compiler-Use-the-Java-binary-from-the-system.patch
     ];
 
-    postPatch = lib.optionalString (chromiumVersionAtLeast "91") ''
-      # Required for patchShebangs (unsupported):
-      chmod -x third_party/webgpu-cts/src/tools/deno
-    '' + ''
+    postPatch = ''
       # remove unused third-party
       for lib in ${toString gnSystemLibraries}; do
         if [ -d "third_party/$lib" ]; then
@@ -191,6 +187,7 @@ let
         substituteInPlace third_party/harfbuzz-ng/src/src/update-unicode-tables.make \
           --replace "/usr/bin/env -S make -f" "/usr/bin/make -f"
       fi
+      chmod -x third_party/webgpu-cts/src/tools/deno
 
       # We want to be able to specify where the sandbox is via CHROME_DEVEL_SANDBOX
       substituteInPlace sandbox/linux/suid/client/setuid_sandbox_host.cc \
diff --git a/pkgs/applications/networking/browsers/chromium/upstream-info.json b/pkgs/applications/networking/browsers/chromium/upstream-info.json
index 2cb53eda3e3e..995e4c9be61e 100644
--- a/pkgs/applications/networking/browsers/chromium/upstream-info.json
+++ b/pkgs/applications/networking/browsers/chromium/upstream-info.json
@@ -44,19 +44,19 @@
     }
   },
   "ungoogled-chromium": {
-    "version": "90.0.4430.212",
-    "sha256": "17nmhrkl81qqvzbh861k2mmifncx4wg1mv1fmn52f8gzn461vqdb",
-    "sha256bin64": "1y33c5829s22yfj0qmsj8fpcxnjhcm3fsxz7744csfsa9cy4fjr7",
+    "version": "91.0.4472.77",
+    "sha256": "0c8vj3gq3nmb7ssiwj6875g0a8hcprss1a4gqw9h7llqywza9ma5",
+    "sha256bin64": "0caf47xam5igdnbhipal1iyicnxxvadhi61k199rwysrvyv5sdad",
     "deps": {
       "gn": {
-        "version": "2021-02-09",
+        "version": "2021-04-06",
         "url": "https://gn.googlesource.com/gn",
-        "rev": "dfcbc6fed0a8352696f92d67ccad54048ad182b3",
-        "sha256": "1941bzg37c4dpsk3sh6ga3696gpq6vjzpcw9rsnf6kdr9mcgdxvn"
+        "rev": "dba01723a441c358d843a575cb7720d54ddcdf92",
+        "sha256": "199xkks67qrn0xa5fhp24waq2vk8qb78a96cb3kdd8v1hgacgb8x"
       },
       "ungoogled-patches": {
-        "rev": "90.0.4430.212-1",
-        "sha256": "05jh05a4g50ws7pr18dl5pwi95knygh6xywp7kyydir7wy1pbin8"
+        "rev": "91.0.4472.77-1",
+        "sha256": "1jfmmkw1y4rcjfgsm7b4v2lrgd3sks5qpajvq0djflbhkpsqxfk0"
       }
     }
   }