diff --git a/test/test_helper.exs b/test/test_helper.exs
index 28b49029a39e..c9006141c2cf 100644
--- a/test/test_helper.exs
+++ b/test/test_helper.exs
@@ -22,6 +22,18 @@ end
 
 default_exclude = [:slow, :minio, :migrations]
 
+# warm up ConCache until https://github.com/sasa1977/con_cache/pull/79
+:code.ensure_loaded(ConCache.Lock.Resource)
+
+for i <- 1..(System.schedulers_online() * 2) do
+  Plausible.Cache.Adapter.with_lock(
+    :sessions,
+    {i, i + 1},
+    500,
+    fn -> :warmup end
+  )
+end
+
 if Mix.env() == :ce_test do
   IO.puts("Test mode: Community Edition")
   ExUnit.configure(exclude: [:ee_only | default_exclude])