diff --git a/README.md b/README.md
index f78e253..ae2ac14 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ With Gradle from repo.spring.io or Maven Central repositories (stable releases o
 
     dependencies {
         //implementation "io.projectreactor.kotlin:reactor-kotlin-extensions:1.3.0-SNAPSHOT"
-        implementation "io.projectreactor.kotlin:reactor-kotlin-extensions:1.2.2"
+        implementation "io.projectreactor.kotlin:reactor-kotlin-extensions:1.3.0-M1"
     }
 ```
 
@@ -29,7 +29,7 @@ With Maven from Maven Central repositories (stable releases):
 <dependency>
     <groupId>io.projectreactor.kotlin</groupId>
     <artifactId>reactor-kotlin-extensions</artifactId>
-    <version>1.2.2</version>
+    <version>1.3.0-M1</version>
 </dependency>
 ```
 
diff --git a/gradle.properties b/gradle.properties
index fe820f8..e50ef68 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1 +1 @@
-version=1.3.0-SNAPSHOT
+version=1.3.0-M1
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 3883896..101a091 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,6 +1,6 @@
 [versions]
-reactorCore = "3.7.0-SNAPSHOT"
-reactorAddons = "3.6.0-SNAPSHOT"
+reactorCore = "3.7.0-M1"
+reactorAddons = "3.6.0-M1"
 # Other shared versions
 kotlin = "1.7.0"