diff --git a/config/dev.exs b/config/dev.exs
index 7e1e3b4be..4faaeff5b 100644
--- a/config/dev.exs
+++ b/config/dev.exs
@@ -52,6 +52,8 @@
   hostname: "localhost",
   pool_size: 10
 
+config :pleroma, Pleroma.Web.ApiSpec.CastAndValidate, strict: true
+
 if File.exists?("./config/dev.secret.exs") do
   import_config "dev.secret.exs"
 else
diff --git a/config/test.exs b/config/test.exs
index 040e67e4a..cbf775109 100644
--- a/config/test.exs
+++ b/config/test.exs
@@ -96,6 +96,8 @@
 
 config :pleroma, Pleroma.Plugs.RemoteIp, enabled: false
 
+config :pleroma, Pleroma.Web.ApiSpec.CastAndValidate, strict: true
+
 if File.exists?("./config/test.secret.exs") do
   import_config "test.secret.exs"
 else