diff --git a/sentry-rails/spec/sentry/rails/tracing_spec.rb b/sentry-rails/spec/sentry/rails/tracing_spec.rb
index 158a7f79e..629f78aa9 100644
--- a/sentry-rails/spec/sentry/rails/tracing_spec.rb
+++ b/sentry-rails/spec/sentry/rails/tracing_spec.rb
@@ -53,7 +53,10 @@
       expect(second_span[:parent_span_id]).to eq(first_span[:span_id])
 
       # this is to make sure we calculate the timestamp in the correct scale (second instead of millisecond)
-      expect(second_span[:timestamp] - second_span[:start_timestamp]).to be_between(10.0 / 1_000_000, 10.0 / 1000)
+      # Use more relaxed bounds for JRuby compatibility
+      min_duration = 10.0 / 1_000_000  # 10 microseconds
+      max_duration = RUBY_PLATFORM == "java" ? 50.0 / 1000 : 10.0 / 1000  # 50ms for JRuby, 10ms for others
+      expect(second_span[:timestamp] - second_span[:start_timestamp]).to be_between(min_duration, max_duration)
     end
 
     it "records transaction alone" do
@@ -89,7 +92,10 @@
       expect(second_span[:parent_span_id]).to eq(first_span[:span_id])
 
       # this is to make sure we calculate the timestamp in the correct scale (second instead of millisecond)
-      expect(second_span[:timestamp] - second_span[:start_timestamp]).to be_between(10.0 / 1_000_000, 10.0 / 1000)
+      # Use more relaxed bounds for JRuby compatibility
+      min_duration = 10.0 / 1_000_000  # 10 microseconds
+      max_duration = RUBY_PLATFORM == "java" ? 50.0 / 1000 : 10.0 / 1000  # 50ms for JRuby, 10ms for others
+      expect(second_span[:timestamp] - second_span[:start_timestamp]).to be_between(min_duration, max_duration)
 
       third_span = transaction[:spans][2]
       expect(third_span[:op]).to eq("template.render_template.action_view")
diff --git a/sentry-sidekiq/spec/sentry/sidekiq/sentry_context_middleware_spec.rb b/sentry-sidekiq/spec/sentry/sidekiq/sentry_context_middleware_spec.rb
index d4dd049a1..c37580d57 100644
--- a/sentry-sidekiq/spec/sentry/sidekiq/sentry_context_middleware_spec.rb
+++ b/sentry-sidekiq/spec/sentry/sidekiq/sentry_context_middleware_spec.rb
@@ -141,13 +141,26 @@ def timecop_delay
   # the default queue
   let!(:queue) { Sidekiq::Queue.new("default") }
 
-  before do
+  def ensure_queue_empty(queue, timeout: 0.1)
     queue.clear
+    start_time = Time.now
+    while queue.size > 0 && (Time.now - start_time) < timeout
+      sleep(0.001)
+    end
+  end
+
+  before do
+    ensure_queue_empty(queue)
+
     perform_basic_setup do |config|
       config.traces_sample_rate = 1.0
     end
   end
 
+  after do
+    ensure_queue_empty(queue)
+  end
+
   it "does not add user to the job if they're absent in the current scope" do
     client.push('queue' => 'default', 'class' => HappyWorker, 'args' => [])