diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6fbff8ec5c..fdcef70c8f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,8 @@ This is the log of notable changes to EAS CLI and related packages.
 
 ### 🧹 Chores
 
+- [steps] Bump `cross-spawn` to a patched version in the TypeScript custom function fixture. ([#3977](https://github.com/expo/eas-cli/pull/3977) by [@szdziedzic](https://github.com/szdziedzic))
+
 ## [20.5.1](https://github.com/expo/eas-cli/releases/tag/v20.5.1) - 2026-07-01
 
 ### 🐛 Bug fixes
diff --git a/packages/steps/src/__tests__/fixtures/my-custom-ts-function/yarn.lock b/packages/steps/src/__tests__/fixtures/my-custom-ts-function/yarn.lock
index 843b9b64d6..29dd2b2980 100644
--- a/packages/steps/src/__tests__/fixtures/my-custom-ts-function/yarn.lock
+++ b/packages/steps/src/__tests__/fixtures/my-custom-ts-function/yarn.lock
@@ -106,9 +106,9 @@ concat-map@0.0.1:
   integrity sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==
 
 cross-spawn@^7.0.3:
-  version "7.0.3"
-  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.3.tgz#f73a85b9d5d41d045551c177e2882d4ac85728a6"
-  integrity sha512-iRDPJKUPVEND7dHPO8rkbOnPpyDygcDFtWjpeWNCgy8WP2rXcxXL8TskReQl6OrB2G7+UJrags1q15Fudc7G6w==
+  version "7.0.6"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.6.tgz#8a58fe78f00dcd70c370451759dfbfaf03e8ee9f"
+  integrity sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==
   dependencies:
     path-key "^3.1.0"
     shebang-command "^2.0.0"