diff --git a/doc/updates.md b/doc/updates.md
new file mode 100644
index 0000000..e63116f
--- /dev/null
+++ b/doc/updates.md
@@ -0,0 +1,103 @@
+# Update mechanism of Bridge
+
+There are mulitple options how to change version of application:
+* Automatic in-app update
+* Manual in-app update
+* Manual install
+
+In-app update ends with restarting bridge into new version. Automatic in-app
+update is downloading, verifying and installing the new version immediatelly
+without user confirmation. For manual in-app update user needs to confirm first.
+Update is done from special update file published on website.
+
+The manual installation requires user to download, verify and install manually
+using installer for given OS.
+
+The bridge is installed and executed differently for given OS:
+
+* Windows and Linux apps are using launcher mechanism:
+    * There is system protected installation path which is created on first
+      install. It contains bridge exe and launcher exe. When users starts
+      bridge the launcher is executed first. It will check update path compare
+      version with installed one. The newer version then is then executed.
+    * Update mechanism means to replace files in update folder which is located
+      in user space.
+
+* macOS app does not use launcher
+    * No launcher, only one executable
+    * In-App udpate replaces the bridge files in installation path directly
+
+
+```mermaid
+flowchart LR
+    subgraph Frontend
+    U[User requests<br>version check]
+    ManIns((Notify user about<br>manual install<br>is needed))
+    R((Notify user<br>about restart))
+    ManUp((Notify user about<br>manual update))
+    NF((Notify user about<br>force update))
+
+    ManUp -->|Install| InstFront[Install]
+    InstFront -->|Ok| R
+    InstFront -->|Error| ManIns
+
+    U --> CheckFront[Check online]
+    CheckFront -->|Ok| IAFront{Is new version<br>and applicable?}
+    CheckFront -->|Error| ManIns
+
+    IAFront -->|No| Latest((Notify user<br>has latest version))
+    IAFront -->|Yes| CanInstall{Can update?}
+    CanInstall -->|No| ManIns
+    CanInstall -->|Yes| NotifOrInstall{Is automatic<br>update enabled?}
+    NotifOrInstall -->|Manual| ManUp
+    end
+
+
+    subgraph Backend
+    W[Wait for next check]
+
+    W --> Check[Check online]
+
+    Check --> NV{Has new<br>version?}
+    Check -->|Error| W
+    NV -->|No new version| W
+    IA{Is install<br>applicable?}
+    NV -->|New version<br>available| IA
+    IA -->|Local rollout<br>not enough| W
+    IA -->|Yes| AU{Is automatic\nupdate enabled?}
+
+    AU -->|Yes| CanUp{Can update?}
+    CanUp -->|No| ManIns
+
+    CanUp -->|Yes| Ins[Install]
+    Ins -->|Error| ManIns
+    Ins -->|Ok| R
+
+    AU -->|No| ManUp
+    ManUp -->|Ignore| W
+
+
+    F[Force update]
+    F --> NF
+    end
+
+    ManIns --> Web[Open web page]
+    NF --> Web
+    ManUp --> Web
+    R --> Re[Restart]
+    NF --> Q[Quit bridge]
+    NotifOrInstall -->|Automatic| W
+```
+
+
+The non-trivial is to combine the update with setting change:
+* turn off/on automatic in-app updates
+* change from stable to beta or back
+
+_TODO fill flow chart details_
+
+
+We are not support downgrade functionality. Only some circumstances can lead to
+downgrading the app version.
+
+_TODO fill flow chart details_
diff --git a/pkg/parallel/parallel_test.go b/pkg/parallel/parallel_test.go
index 628a5dc..67805ed 100644
--- a/pkg/parallel/parallel_test.go
+++ b/pkg/parallel/parallel_test.go
@@ -34,7 +34,7 @@ var (
 	wantOutput              = []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
 	testProcessSleep        = 100 // ms
 	runParallelTimeOverhead = 150 // ms
-	windowsCIExtra          = 250 // ms - estimated experimentally
+	windowsCIExtra          = 500 // ms - estimated experimentally
 )
 
 func TestParallel(t *testing.T) {
diff --git a/pkg/store/cooldown_test.go b/pkg/store/cooldown_test.go
index 88fa27f..eb96090 100644
--- a/pkg/store/cooldown_test.go
+++ b/pkg/store/cooldown_test.go
@@ -127,6 +127,6 @@ func TestCooldownNotSooner(t *testing.T) {
 	assert.True(t, testCooldown.isTooSoon())
 
 	// After given wait time it shouldn't be soon anymore.
-	time.Sleep(waitTime / 2)
+	time.Sleep(waitTime/2 + time.Millisecond)
 	assert.False(t, testCooldown.isTooSoon())
 }
diff --git a/test/Makefile b/test/Makefile
index fd52323..45649d1 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -1,7 +1,7 @@
 .PHONY: check-go check-godog install-godog test test-bridge test-live test-live-bridge test-stage test-debug test-live-debug bench
 
 export GO111MODULE=on
-export BRIDGE_VERSION:=2.1.2+integrationtests
+export BRIDGE_VERSION:=2.1.3+integrationtests
 export VERBOSITY?=fatal
 export TEST_DATA=testdata