diff --git a/pkgs/by-name/re/repath-studio/fix-karma-sandbox.patch b/pkgs/by-name/re/repath-studio/fix-karma-sandbox.patch
new file mode 100644
index 000000000000..1c78fa1bc21c
--- /dev/null
+++ b/pkgs/by-name/re/repath-studio/fix-karma-sandbox.patch
@@ -0,0 +1,23 @@
+--- a/karma.conf.js
++++ b/karma.conf.js
+@@ -7,7 +7,7 @@
+     customLaunchers: {
+       ChromeHeadlessNoSandbox: {
+         base: 'ChromeHeadless',
+-        flags: ['--no-sandbox']
++        flags: ['--no-sandbox', '--disable-dev-shm-usage']
+       },
+       CustomElectron: {
+         base: 'Electron',
+@@ -42,6 +42,10 @@
+       outputDir: junitOutputDir + '/karma', // results will be saved as outputDir/browserName.xml
+       outputFile: undefined, // if included, results will be saved as outputDir/browserName/outputFile
+       suite: '' // suite will become the package name attribute in xml testsuite element
+-    }
++    },
++
++    browserDisconnectTimeout: 300000,
++    browserNoActivityTimeout: 300000,
++    pingTimeout: 300000
+   })
+ }
diff --git a/pkgs/by-name/re/repath-studio/package.nix b/pkgs/by-name/re/repath-studio/package.nix
index 5f62e0f037b1..9a3c24292f79 100644
--- a/pkgs/by-name/re/repath-studio/package.nix
+++ b/pkgs/by-name/re/repath-studio/package.nix
@@ -36,6 +36,8 @@ buildNpmPackage (finalAttrs: {
     # outputHash of clojureHome changes each time `clojure` is updated
     # https://github.com/ngi-nix/ngipkgs/pull/1727#discussion_r2470180998
     ./pin-clojure.patch
+    # checks have become flaky in nix build sandbox, increase timeout and disable dev/shm for chrome
+    ./fix-karma-sandbox.patch
     ./0001-disable-auto-update-check.patch
   ];