diff --git a/cli/CHANGELOG.md b/cli/CHANGELOG.md
index a34da9d160e..8b09a2903bd 100644
--- a/cli/CHANGELOG.md
+++ b/cli/CHANGELOG.md
@@ -1,4 +1,12 @@
 <!-- See the ../guides/writing-the-cypress-changelog.md for details on writing the changelog. -->
+## 15.8.3
+
+_Released 1/13/2026 (PENDING)_
+
+**Bugfixes:**
+
+- Fixed an issue where output could be cut off when the process exits in CI environments. Fixed in [#33213](https://github.com/cypress-io/cypress/pull/33213).
+
 ## 15.8.2
 
 _Released 01/06/2026_
diff --git a/packages/server/lib/cypress.ts b/packages/server/lib/cypress.ts
index f82b8164642..3f6584da658 100644
--- a/packages/server/lib/cypress.ts
+++ b/packages/server/lib/cypress.ts
@@ -20,6 +20,24 @@ const debug = Debug('cypress:server:cypress')
 
 type Mode = 'exit' | 'info' | 'interactive' | 'pkg' | 'record' | 'results' | 'run' | 'smokeTest' | 'version' | 'returnPkg' | 'exitWithCode'
 
+/**
+ * Waits for a writable stream to drain its buffer.
+ * This is necessary because when stdout/stderr is piped (e.g., in CI environments),
+ * writes are buffered and process.exit() would terminate before the buffer is flushed.
+ */
+const waitForStreamDrain = (stream: NodeJS.WriteStream): Promise<void> => {
+  return new Promise((resolve) => {
+    if (!stream.isTTY && stream.writableLength > 0) {
+      debug('waiting for stream to drain, writableLength: %d', stream.writableLength)
+      stream.once('drain', resolve)
+      // Safety timeout to prevent hanging indefinitely
+      setTimeout(resolve, 5000)
+    } else {
+      setImmediate(resolve)
+    }
+  })
+}
+
 const exit = async (code = 0) => {
   // TODO: we shouldn't have to do this
   // but cannot figure out how null is
@@ -41,6 +59,13 @@ const exit = async (code = 0) => {
     debug('telemetry shutdown errored with: ', err)
   })
 
+  // Wait for stdout/stderr to drain before exiting to prevent truncated output in CI
+  debug('waiting for stdout/stderr to drain before exit')
+  await Promise.all([
+    waitForStreamDrain(process.stdout),
+    waitForStreamDrain(process.stderr),
+  ])
+
   debug('process.exit', code)
 
   return process.exit(code)