diff --git a/README.md b/README.md
index b677e44..0256263 100644
--- a/README.md
+++ b/README.md
@@ -6,9 +6,11 @@ in native targets.
 
 # Important note
 
-Currently published version 0.3.2 for all platform is fully compatible with breaking kotlinx.datetime/kotlin.time migration as of Kotlin 2.2.21 and is __a recommended version to use__.
+Currently published version 0.4.0 for all platform is fully compatible with breaking kotlinx.datetime/kotlin.time migration as of Kotlin 2.2.21 and is __a recommended version to use__. Still there could be minor issues as:
 
-Sorry for inconveniences, it is all caused by strange ideas of the Kotlin team.
+- version before `0.4.0` treated unsigned ints as signed ones, as older versions of `kotlinx.serialization` did. Since `0.4.0` UInt, ULong and UShort are treated as unsigned, no more @Unsigned annotation is needed.
+
+  Most likely it will not cause any problems, but be informed. 
 
 # Documentation
 
diff --git a/build.gradle.kts b/build.gradle.kts
index 0ff3518..335baf2 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -9,7 +9,7 @@ plugins {
 }
 
 group = "net.sergeych"
-version = "0.3.2"
+version = "0.4.0"
 
 repositories {
     google()