diff --git a/NEWS b/NEWS
index f851d37d..3db8ca84 100644
--- a/NEWS
+++ b/NEWS
@@ -9,6 +9,7 @@
   - support default maintainer/bugowner search based on binary package names
   - support to lookup --all definitions of maintainers of bugowners. Either
     for showing or setting them.
+  - buildinfo --debug  option for verbose output of dependency calculation
 
 0.136
   - prefer TLS v1.1 or v1.2 if available
diff --git a/osc/commandline.py b/osc/commandline.py
index 8d46e4cb..6b1d2f4c 100644
--- a/osc/commandline.py
+++ b/osc/commandline.py
@@ -4749,6 +4749,8 @@ Please submit there instead, or use --nodevelproject to force direct submission.
                 print "  ", dep.text
 
 
+    @cmdln.option('-d', '--debug', action='store_true',
+                        help='verbose output of build dependencies')
     @cmdln.option('-x', '--extra-pkgs', metavar='PAC', action='append',
                   help='Add this package when computing the buildinfo')
     @cmdln.option('-p', '--prefer-pkgs', metavar='DIR', action='append',
@@ -4824,6 +4826,7 @@ Please submit there instead, or use --nodevelproject to force direct submission.
         print ''.join(get_buildinfo(apiurl,
                                     project, package, repository, arch,
                                     specfile=build_descr_data,
+                                    debug=opts.debug,
                                     addlist=opts.extra_pkgs))
 
 
diff --git a/osc/core.py b/osc/core.py
index 7d205eb9..ae863289 100644
--- a/osc/core.py
+++ b/osc/core.py
@@ -5123,11 +5123,13 @@ def get_dependson(apiurl, project, repository, arch, packages=None, reverse=None
     f = http_GET(u)
     return f.read()
 
-def get_buildinfo(apiurl, prj, package, repository, arch, specfile=None, addlist=None):
+def get_buildinfo(apiurl, prj, package, repository, arch, specfile=None, addlist=None, debug=None):
     query = []
     if addlist:
         for i in addlist:
             query.append('add=%s' % quote_plus(i))
+    if debug:
+        query.append('debug=1')
 
     u = makeurl(apiurl, ['build', prj, repository, arch, package, '_buildinfo'], query=query)