diff --git a/backend/app/dependencies.py b/backend/app/dependencies.py
index a1acad7..61150e8 100644
--- a/backend/app/dependencies.py
+++ b/backend/app/dependencies.py
@@ -435,6 +435,8 @@ def _resolve_dependency_to_artifact(
     if not package:
         return None
 
+    logger.info(f"_resolve_dependency_to_artifact: package_id={package.id}, version={version!r}, tag={tag!r}")
+
     if version:
         # Check if this is a version constraint (>=, <, etc.) or exact version
         if _is_version_constraint(version):
@@ -452,6 +454,7 @@ def _resolve_dependency_to_artifact(
                     Artifact.id == pkg_version.artifact_id
                 ).first()
                 if artifact:
+                    logger.info(f"_resolve_dependency_to_artifact: found by version {version}")
                     return (artifact.id, version, artifact.size)
 
         # Also check if there's a tag with this exact name
@@ -459,6 +462,7 @@ def _resolve_dependency_to_artifact(
             Tag.package_id == package.id,
             Tag.name == version,
         ).first()
+        logger.info(f"_resolve_dependency_to_artifact: tag lookup by version name, found={tag_record is not None}")
         if tag_record:
             artifact = db.query(Artifact).filter(
                 Artifact.id == tag_record.artifact_id
@@ -472,6 +476,7 @@ def _resolve_dependency_to_artifact(
             Tag.package_id == package.id,
             Tag.name == tag,
         ).first()
+        logger.info(f"_resolve_dependency_to_artifact: tag lookup by tag param, found={tag_record is not None}")
         if tag_record:
             artifact = db.query(Artifact).filter(
                 Artifact.id == tag_record.artifact_id
@@ -479,6 +484,9 @@ def _resolve_dependency_to_artifact(
             if artifact:
                 return (artifact.id, tag, artifact.size)
 
+    # Debug: list actual tags
+    sample_tags = db.query(Tag).filter(Tag.package_id == package.id).limit(3).all()
+    logger.info(f"_resolve_dependency_to_artifact: NOT FOUND. Sample tags: {[t.name for t in sample_tags]}")
     return None
 
 
@@ -685,11 +693,6 @@ def resolve_dependencies(
         db, project_name, package_name, ref, ref
     )
     if not resolved:
-        # Debug: list available tags
-        from .models import Tag
-        tags = db.query(Tag).filter(Tag.package_id == package.id).limit(5).all()
-        tag_names = [t.name for t in tags]
-        logger.warning(f"resolve_dependencies: artifact not found for ref={ref!r}. Sample tags: {tag_names}")
         raise DependencyNotFoundError(project_name, package_name, ref)
 
     root_artifact_id, root_version, root_size = resolved