2 files changed, 18 insertions, 2 deletions
diff --git a/api/src/main/java/org/semver/Version.java b/api/src/main/java/org/semver/Version.java
index a6871b5..b4c76ee 100755
--- a/api/src/main/java/org/semver/Version.java
+++ b/api/src/main/java/org/semver/Version.java
@@ -24,6 +24,7 @@ import javax.annotation.Nonnegative;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
+import org.apache.commons.lang.StringUtils;
 
 /**
  *
@@ -40,7 +41,7 @@ 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";
@@ -88,7 +89,7 @@ public final class Version implements Comparable<Version> {
         final int minor = Integer.valueOf(matcher.group(2));
         final int patch;
         final String patchMatch = matcher.group(3);
-        if (patchMatch != null) {
+        if (StringUtils.isNotEmpty(patchMatch)) {
            patch = Integer.valueOf(patchMatch);
         } else {
             patch = 0;
diff --git a/api/src/test/java/org/semver/VersionTest.java b/api/src/test/java/org/semver/VersionTest.java
index 9ba6e2d..a7aa0e4 100755
--- a/api/src/test/java/org/semver/VersionTest.java
+++ b/api/src/test/java/org/semver/VersionTest.java
@@ -72,6 +72,21 @@ public class VersionTest {
     }
 
     @Test
+    public void shouldMajorBeCorrectlyIncremented() {
+        Assert.assertEquals(Version.parse("10.0.0"), Version.parse("9.0.0").next(Version.Element.MAJOR));
+    }
+
+    @Test
+    public void shouldMinorBeCorrectlyIncremented() {
+        Assert.assertEquals(Version.parse("0.10.0"), Version.parse("0.9.0").next(Version.Element.MINOR));
+    }
+
+    @Test
+    public void shouldPatchBeCorrectlyIncremented() {
+        Assert.assertEquals(Version.parse("0.0.10"), Version.parse("0.0.9").next(Version.Element.PATCH));
+    }
+
+    @Test
     public void shouldDevelopmentBeInDevelopment() {
         Assert.assertTrue(Version.parse("0.1.1").isInDevelopment());
         Assert.assertFalse(Version.parse("1.1.1").isInDevelopment());