diff --git a/polkadot/zombienet_tests/smoke/0004-coretime-smoke-test.zndsl b/polkadot/zombienet_tests/smoke/0004-coretime-smoke-test.zndsl
index b3a3b46ed780..9852d5fc5802 100644
--- a/polkadot/zombienet_tests/smoke/0004-coretime-smoke-test.zndsl
+++ b/polkadot/zombienet_tests/smoke/0004-coretime-smoke-test.zndsl
@@ -9,7 +9,7 @@ coretime-collator: is up
 alice: js-script ./0004-configure-relay.js with "" return is 0 within 600 secs
 
 # Coretime chain should be producing blocks when the extrinsic is sent
-alice: parachain 1005 block height is at least 10 within 120 seconds
+alice: parachain 1005 block height is at least 10 within 180 seconds
 
 # configure broker chain
 coretime-collator: js-script ./0004-configure-broker.js with "" return is 0 within 600 secs
diff --git a/prdoc/pr_6268.prdoc b/prdoc/pr_6268.prdoc
new file mode 100644
index 000000000000..cfa44c24533c
--- /dev/null
+++ b/prdoc/pr_6268.prdoc
@@ -0,0 +1,10 @@
+title: Bump a timeout in zombienet coretime smoke test
+doc:
+- audience: Node Dev
+  description: |-
+    polkadot/zombienet_tests/smoke/0004-coretime-smoke-test.zndsl still timeouts on CI from time to time. Bumping the timeout a bit more.
+
+    Related to https://github.com/paritytech/polkadot-sdk/issues/6226
+crates:
+- name: polkadot
+  bump: none