diff --git a/lib/prometheus/client/push.rb b/lib/prometheus/client/push.rb
index 1490c82d..44147ae1 100644
--- a/lib/prometheus/client/push.rb
+++ b/lib/prometheus/client/push.rb
@@ -87,6 +87,8 @@ def parse(url)
       end
 
       def build_path(job, grouping_key)
+        job = job.to_s
+
         # Job can't be empty, but it can contain `/`, so we need to base64
         # encode it in that case
         if job.include?('/')
diff --git a/spec/prometheus/client/push_spec.rb b/spec/prometheus/client/push_spec.rb
index 4af55ad5..43890366 100644
--- a/spec/prometheus/client/push_spec.rb
+++ b/spec/prometheus/client/push_spec.rb
@@ -93,6 +93,14 @@
       expect(push.path).to eql('/metrics/job/test-job/foo/bar/baz/qux')
     end
 
+    it 'converts non-string job names to strings' do
+      push = Prometheus::Client::Push.new(
+        job: :foo,
+      )
+
+      expect(push.path).to eql('/metrics/job/foo')
+    end
+
     it 'encodes the job name in url-safe base64 if it contains `/`' do
       push = Prometheus::Client::Push.new(
         job: 'foo/test-job',