diff --git a/ouroboros-network/ouroboros-network.cabal b/ouroboros-network/ouroboros-network.cabal
index bc75fe5f645..edcd8e20880 100644
--- a/ouroboros-network/ouroboros-network.cabal
+++ b/ouroboros-network/ouroboros-network.cabal
@@ -99,7 +99,6 @@ library
                        TypeFamilies,
                        TypeInType
   build-depends:       base              >=4.14 && <4.17,
-                       aeson,
                        async             >=2.2 && <2.3,
                        bytestring        >=0.10 && <0.12,
                        cborg             >=0.2.1 && <0.3,
diff --git a/ouroboros-network/test/Test/Ouroboros/Network/PeerSelection.hs b/ouroboros-network/test/Test/Ouroboros/Network/PeerSelection.hs
index 0994124b97c..fa0a4e5a935 100644
--- a/ouroboros-network/test/Test/Ouroboros/Network/PeerSelection.hs
+++ b/ouroboros-network/test/Test/Ouroboros/Network/PeerSelection.hs
@@ -17,6 +17,7 @@
 {-# OPTIONS_GHC -Wno-orphans #-}
 -- TODO: remove it once #3601 is fixed
 {-# OPTIONS_GHC -Wno-unused-top-binds #-}
+{-# OPTIONS_GHC -Wno-incomplete-uni-patterns #-}
 
 module Test.Ouroboros.Network.PeerSelection
   ( tests