Next major version will be 4.0.0-M1
diff --git a/pom.xml b/pom.xml
index d64a9ba..9456985 100644
--- a/pom.xml
+++ b/pom.xml
@@ -28,7 +28,7 @@
 
   <groupId>org.apache.maven.wagon</groupId>
   <artifactId>wagon</artifactId>
-  <version>3.5.4-SNAPSHOT</version>
+  <version>4.0.0-M1-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>Apache Maven Wagon</name>
@@ -199,7 +199,7 @@
     <connection>scm:git:https://gitbox.apache.org/repos/asf/maven-wagon.git</connection>
     <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/maven-wagon.git</developerConnection>
     <url>https://github.com/apache/maven-wagon/tree/${project.scm.tag}</url>
-    <tag>wagon-3.4.1</tag>
+    <tag>wagon-4.0.0-M1</tag>
   </scm>
 
   <issueManagement>
diff --git a/wagon-provider-api/pom.xml b/wagon-provider-api/pom.xml
index 57ca2d1..957e40a 100644
--- a/wagon-provider-api/pom.xml
+++ b/wagon-provider-api/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-provider-test/pom.xml b/wagon-provider-test/pom.xml
index ee1540c..5ef5b77 100644
--- a/wagon-provider-test/pom.xml
+++ b/wagon-provider-test/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-providers/pom.xml b/wagon-providers/pom.xml
index ba75df3..29a36ad 100644
--- a/wagon-providers/pom.xml
+++ b/wagon-providers/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-providers/wagon-file/pom.xml b/wagon-providers/wagon-file/pom.xml
index 29f7c48..9075906 100644
--- a/wagon-providers/wagon-file/pom.xml
+++ b/wagon-providers/wagon-file/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon-providers</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-providers/wagon-ftp/pom.xml b/wagon-providers/wagon-ftp/pom.xml
index 6facac1..f4e54fd 100644
--- a/wagon-providers/wagon-ftp/pom.xml
+++ b/wagon-providers/wagon-ftp/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon-providers</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-providers/wagon-http-lightweight/pom.xml b/wagon-providers/wagon-http-lightweight/pom.xml
index 06b9acd..88334f2 100644
--- a/wagon-providers/wagon-http-lightweight/pom.xml
+++ b/wagon-providers/wagon-http-lightweight/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon-providers</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-providers/wagon-http-shared/pom.xml b/wagon-providers/wagon-http-shared/pom.xml
index 2924af2..aea071d 100644
--- a/wagon-providers/wagon-http-shared/pom.xml
+++ b/wagon-providers/wagon-http-shared/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon-providers</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-providers/wagon-http/pom.xml b/wagon-providers/wagon-http/pom.xml
index 316cadd..ba6462f 100644
--- a/wagon-providers/wagon-http/pom.xml
+++ b/wagon-providers/wagon-http/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon-providers</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-providers/wagon-scm/pom.xml b/wagon-providers/wagon-scm/pom.xml
index 6316dcd..8645a74 100644
--- a/wagon-providers/wagon-scm/pom.xml
+++ b/wagon-providers/wagon-scm/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon-providers</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-providers/wagon-ssh-common-test/pom.xml b/wagon-providers/wagon-ssh-common-test/pom.xml
index 5b85640..5a5d271 100644
--- a/wagon-providers/wagon-ssh-common-test/pom.xml
+++ b/wagon-providers/wagon-ssh-common-test/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon-providers</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-providers/wagon-ssh-common/pom.xml b/wagon-providers/wagon-ssh-common/pom.xml
index 92d763c..a2312f8 100644
--- a/wagon-providers/wagon-ssh-common/pom.xml
+++ b/wagon-providers/wagon-ssh-common/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon-providers</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-providers/wagon-ssh-external/pom.xml b/wagon-providers/wagon-ssh-external/pom.xml
index 3a6dcde..16eb7c1 100644
--- a/wagon-providers/wagon-ssh-external/pom.xml
+++ b/wagon-providers/wagon-ssh-external/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon-providers</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-providers/wagon-ssh/pom.xml b/wagon-providers/wagon-ssh/pom.xml
index 93cc73b..27afd63 100644
--- a/wagon-providers/wagon-ssh/pom.xml
+++ b/wagon-providers/wagon-ssh/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon-providers</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-providers/wagon-webdav-jackrabbit/pom.xml b/wagon-providers/wagon-webdav-jackrabbit/pom.xml
index 7d7a7e7..44410d9 100644
--- a/wagon-providers/wagon-webdav-jackrabbit/pom.xml
+++ b/wagon-providers/wagon-webdav-jackrabbit/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon-providers</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-tcks/pom.xml b/wagon-tcks/pom.xml
index 6e65bba..d32351e 100644
--- a/wagon-tcks/pom.xml
+++ b/wagon-tcks/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/wagon-tcks/wagon-tck-http/pom.xml b/wagon-tcks/wagon-tck-http/pom.xml
index c006508..3b11179 100644
--- a/wagon-tcks/wagon-tck-http/pom.xml
+++ b/wagon-tcks/wagon-tck-http/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.wagon</groupId>
     <artifactId>wagon-tcks</artifactId>
-    <version>3.5.4-SNAPSHOT</version>
+    <version>4.0.0-M1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>