diff --git a/bump_version.py b/bump_version.py
new file mode 100755
index 0000000..3c2c5e8
--- /dev/null
+++ b/bump_version.py
@@ -0,0 +1,133 @@
+#!/usr/bin/env python3
+"""
+Version bump script for EmbeddingBuddy.
+Automatically updates version in pyproject.toml following semantic versioning.
+"""
+import argparse
+import re
+import sys
+from pathlib import Path
+
+
+def get_current_version(pyproject_path: Path) -> str:
+    """Extract current version from pyproject.toml."""
+    content = pyproject_path.read_text()
+    match = re.search(r'version\s*=\s*"([^"]+)"', content)
+    if not match:
+        raise ValueError("Could not find version in pyproject.toml")
+    return match.group(1)
+
+
+def parse_version(version_str: str) -> tuple[int, int, int]:
+    """Parse semantic version string into major, minor, patch tuple."""
+    match = re.match(r'(\d+)\.(\d+)\.(\d+)', version_str)
+    if not match:
+        raise ValueError(f"Invalid version format: {version_str}")
+    return int(match.group(1)), int(match.group(2)), int(match.group(3))
+
+
+def bump_version(current: str, bump_type: str) -> str:
+    """Bump version based on type (major, minor, patch)."""
+    major, minor, patch = parse_version(current)
+    
+    if bump_type == "major":
+        return f"{major + 1}.0.0"
+    elif bump_type == "minor":
+        return f"{major}.{minor + 1}.0"
+    elif bump_type == "patch":
+        return f"{major}.{minor}.{patch + 1}"
+    else:
+        raise ValueError(f"Invalid bump type: {bump_type}")
+
+
+def update_version_in_file(pyproject_path: Path, new_version: str) -> None:
+    """Update version in pyproject.toml file."""
+    content = pyproject_path.read_text()
+    updated_content = re.sub(
+        r'version\s*=\s*"[^"]+"',
+        f'version = "{new_version}"',
+        content
+    )
+    pyproject_path.write_text(updated_content)
+
+
+def main():
+    """Main version bump function."""
+    parser = argparse.ArgumentParser(
+        description="Bump version in pyproject.toml",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        epilog="""
+Examples:
+  python bump_version.py patch    # 0.3.0 -> 0.3.1
+  python bump_version.py minor    # 0.3.0 -> 0.4.0
+  python bump_version.py major    # 0.3.0 -> 1.0.0
+  python bump_version.py --set 1.2.3  # Set specific version
+
+Semantic versioning guide:
+  - patch: Bug fixes, no API changes
+  - minor: New features, backward compatible
+  - major: Breaking changes, not backward compatible
+        """
+    )
+    
+    group = parser.add_mutually_exclusive_group(required=True)
+    group.add_argument(
+        "bump_type",
+        nargs="?",
+        choices=["major", "minor", "patch"],
+        help="Type of version bump"
+    )
+    group.add_argument(
+        "--set",
+        dest="set_version",
+        help="Set specific version (e.g., 1.2.3)"
+    )
+    
+    parser.add_argument(
+        "--dry-run",
+        action="store_true",
+        help="Show what would be changed without making changes"
+    )
+    
+    args = parser.parse_args()
+    
+    # Find pyproject.toml
+    pyproject_path = Path("pyproject.toml")
+    if not pyproject_path.exists():
+        print("❌ pyproject.toml not found in current directory")
+        sys.exit(1)
+    
+    try:
+        current_version = get_current_version(pyproject_path)
+        print(f"📦 Current version: {current_version}")
+        
+        if args.set_version:
+            # Validate the set version format
+            parse_version(args.set_version)
+            new_version = args.set_version
+        else:
+            new_version = bump_version(current_version, args.bump_type)
+        
+        print(f"🚀 New version: {new_version}")
+        
+        if args.dry_run:
+            print("🔍 Dry run - no changes made")
+        else:
+            update_version_in_file(pyproject_path, new_version)
+            print("✅ Version updated in pyproject.toml")
+            print()
+            print("💡 Next steps:")
+            print("   1. Review changes: git diff")
+            print("   2. Commit changes: git add . && git commit -m 'bump version to {}'".format(new_version))
+            print("   3. Tag release: git tag v{}".format(new_version))
+            
+    except ValueError as e:
+        print(f"❌ Error: {e}")
+        sys.exit(1)
+    except Exception as e:
+        print(f"❌ Unexpected error: {e}")
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/embedding-buddy-screenshot.png b/embedding-buddy-screenshot.png
index 8ecee66..acffe3d 100644
Binary files a/embedding-buddy-screenshot.png and b/embedding-buddy-screenshot.png differ
diff --git a/pyproject.toml b/pyproject.toml
index cbc385c..a17ec5e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "embeddingbuddy"
-version = "0.3.0"
+version = "0.4.0"
 description = "A Python Dash application for interactive exploration and visualization of embedding vectors through dimensionality reduction techniques."
 readme = "README.md"
 requires-python = ">=3.11"