diff --git a/lib/fbe/iterate.rb b/lib/fbe/iterate.rb
index d702a652..46e7f329 100644
--- a/lib/fbe/iterate.rb
+++ b/lib/fbe/iterate.rb
@@ -277,7 +277,12 @@ def over # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metric
     repos =
       Fbe.unmask_repos(
         loog: @loog, options: @options, global: @global, quota_aware: @quota
-      ).map { |n| oct.repo_id_by_name(n) }
+      ).filter_map do |n|
+        oct.repo_id_by_name(n)
+      rescue Fbe::Error => e
+        @loog.warn("Skipping repository #{n}: #{e.message}")
+        nil
+      end
     started = Time.now
     restarted = []
     markers = {}
diff --git a/test/fbe/test_iterate.rb b/test/fbe/test_iterate.rb
index 3abbdf5c..e0ccf262 100644
--- a/test/fbe/test_iterate.rb
+++ b/test/fbe/test_iterate.rb
@@ -749,6 +749,36 @@ def test_continues_where_the_previous_run_stopped
     assert_equal([[1, 2], [3], []], runs)
   end
 
+  def test_skips_repository_that_answers_forbidden
+    WebMock.disable_net_connect!
+    stub_request(:get, 'https://api.github.com/rate_limit').to_return(
+      { body: '{"rate":{"remaining":1000}}', headers: { 'X-RateLimit-Remaining' => '1000' } }
+    )
+    stub_request(:get, 'https://api.github.com/repos/foo/foo').to_return(
+      body: { id: 42, full_name: 'foo/foo', archived: false }.to_json,
+      headers: { 'Content-Type': 'application/json' }
+    )
+    stub_request(:get, 'https://api.github.com/repos/foo/gone').to_return(
+      status: 403, body: { message: 'Forbidden' }.to_json, headers: { 'Content-Type': 'application/json' }
+    )
+    global = {}
+    loog = Loog::NULL
+    options = Judges::Options.new(['repositories=foo/foo,foo/gone'])
+    fb = Factbase.new
+    fb.insert.foo = 42
+    seen = []
+    Fbe.iterate(fb:, loog:, global:, options:, epoch: Time.now, kickoff: Time.now) do
+      as('marker')
+      by('(agg (always) (max foo))')
+      repeats(1)
+      over do |repository, foo|
+        seen << repository
+        foo
+      end
+    end
+    assert_equal([42], seen, 'The accessible repository must still be scanned')
+  end
+
   private
 
   def fresh_iterator