diff --git a/lib/pleroma/activity/search.ex b/lib/pleroma/activity/search.ex
index ea9783225..babf9520b 100644
--- a/lib/pleroma/activity/search.ex
+++ b/lib/pleroma/activity/search.ex
@@ -20,7 +20,7 @@ def search(user, search_query, options \\ []) do
     author = Keyword.get(options, :author)
 
     search_function =
-      if Application.get_env(:postgres, :version) >= 11 do
+      if :persistent_term.get({Pleroma.Repo, :postgres_version}) >= 11 do
         :websearch
       else
         :plain
diff --git a/lib/pleroma/application.ex b/lib/pleroma/application.ex
index 22936bd7f..bd568d858 100644
--- a/lib/pleroma/application.ex
+++ b/lib/pleroma/application.ex
@@ -131,7 +131,7 @@ defp set_postgres_server_version do
           9.6
       end
 
-    Application.put_env(:postgres, :version, version)
+    :persistent_term.put({Pleroma.Repo, :postgres_version}, version)
   end
 
   def load_custom_modules do
diff --git a/test/pleroma/activity/search_test.exs b/test/pleroma/activity/search_test.exs
index 37c0feeea..988949154 100644
--- a/test/pleroma/activity/search_test.exs
+++ b/test/pleroma/activity/search_test.exs
@@ -19,8 +19,8 @@ test "it finds something" do
   end
 
   test "using plainto_tsquery on postgres < 11" do
-    old_config = Application.get_env(:postgres, :version)
-    Application.put_env(:postgres, :version, 10.0)
+    old_version = :persistent_term.get({Pleroma.Repo, :postgres_version})
+    :persistent_term.put({Pleroma.Repo, :postgres_version}, 10.0)
 
     user = insert(:user)
     {:ok, post} = CommonAPI.post(user, %{status: "it's wednesday my dudes"})
@@ -31,7 +31,7 @@ test "using plainto_tsquery on postgres < 11" do
 
     assert result.id == post.id
 
-    Application.put_env(:postgres, :version, old_config)
+    :persistent_term.put({Pleroma.Repo, :postgres_version}, old_version)
   end
 
   test "using websearch_to_tsquery" do
diff --git a/test/pleroma/web/mastodon_api/controllers/search_controller_test.exs b/test/pleroma/web/mastodon_api/controllers/search_controller_test.exs
index 2b2579857..2f0bce450 100644
--- a/test/pleroma/web/mastodon_api/controllers/search_controller_test.exs
+++ b/test/pleroma/web/mastodon_api/controllers/search_controller_test.exs
@@ -279,8 +279,8 @@ test "search", %{conn: conn} do
     end
 
     test "search fetches remote statuses and prefers them over other results", %{conn: conn} do
-      old_config = Application.get_env(:postgres, :version)
-      Application.put_env(:postgres, :version, 10.0)
+      old_version = :persistent_term.get({Pleroma.Repo, :postgres_version})
+      :persistent_term.put({Pleroma.Repo, :postgres_version}, 10.0)
 
       capture_log(fn ->
         {:ok, %{id: activity_id}} =
@@ -299,7 +299,7 @@ test "search fetches remote statuses and prefers them over other results", %{con
                ] = results["statuses"]
       end)
 
-      Application.put_env(:postgres, :version, old_config)
+      :persistent_term.put({Pleroma.Repo, :postgres_version}, old_version)
     end
 
     test "search doesn't show statuses that it shouldn't", %{conn: conn} do