1 files changed, 6 insertions, 1 deletions
diff --git a/api/src/main/java/org/semver/Version.java b/api/src/main/java/org/semver/Version.java
index d7b8dbd..417d8b3 100755
--- a/api/src/main/java/org/semver/Version.java
+++ b/api/src/main/java/org/semver/Version.java
@@ -40,8 +40,9 @@ public final class Version implements Comparable<Version> {
         MAJOR, MINOR, PATCH, SPECIAL;
     }
 
-    private static final String FORMAT = "(\\d)\\.(\\d)\\.(\\d)([A-Za-z][0-9A-Za-z-]*)?";
+    private static final String FORMAT = "(\\d)\\.(\\d)\\.(\\d)(?:\\.|-)?([A-Za-z][0-9A-Za-z-]*)?";
     private static final Pattern PATTERN = Pattern.compile(Version.FORMAT);
+    private static final String SNAPSHOT_VERSION_SUFFIX = "-SNAPSHOT";
 
     private final int major;
     private final int minor;
@@ -118,6 +119,10 @@ public final class Version implements Comparable<Version> {
         return !isInDevelopment();
     }
 
+    public boolean isSnapshot() {
+        return this.special.endsWith(Version.SNAPSHOT_VERSION_SUFFIX);
+    }
+
     @Override
     public int hashCode() {
         int hash = 5;