diff --git a/Cabal-syntax/src/Distribution/PackageDescription/PrettyPrint.hs b/Cabal-syntax/src/Distribution/PackageDescription/PrettyPrint.hs
index b03b1b99ada..8303a65e7d5 100644
--- a/Cabal-syntax/src/Distribution/PackageDescription/PrettyPrint.hs
+++ b/Cabal-syntax/src/Distribution/PackageDescription/PrettyPrint.hs
@@ -271,7 +271,7 @@ preProcessInternalDeps specVer gpd
 
     transformD :: Dependency -> [Dependency]
     transformD (Dependency pn vr ln)
-      | pn == thisPn =
+      | pn == thisPn && specVer < CabalSpecV3_0 =
           if LMainLibName `NES.member` ln
             then Dependency thisPn vr mainLibSet : sublibs
             else sublibs
@@ -282,9 +282,12 @@ preProcessInternalDeps specVer gpd
           ]
     transformD d = [d]
 
+    -- Always perform transformation for mixins as syntax was only introduced in 3.4
+    -- This guard is uncessary as no transformations take place when cabalSpec < CabalSpecV3_4 but
+    -- it more clearly signifies the intent.
     transformM :: Mixin -> Mixin
     transformM (Mixin pn (LSubLibName uqn) inc)
-      | pn == thisPn =
+      | pn == thisPn && specVer < CabalSpecV3_4 =
           mkMixin (unqualComponentNameToPackageName uqn) LMainLibName inc
     transformM m = m
 
diff --git a/Cabal-tests/tests/ParserTests/regressions/issue-6083-b.format b/Cabal-tests/tests/ParserTests/regressions/issue-6083-b.format
index d209d572be0..255c71de998 100644
--- a/Cabal-tests/tests/ParserTests/regressions/issue-6083-b.format
+++ b/Cabal-tests/tests/ParserTests/regressions/issue-6083-b.format
@@ -6,7 +6,7 @@ library
     default-language: Haskell2010
     build-depends:
         base,
-        sublib
+        issue:sublib
 
 library sublib
     default-language: Haskell2010
@@ -15,10 +15,10 @@ executable demo-a
     main-is:       Main.hs
     build-depends:
         issue,
-        sublib
+        issue:sublib
 
 executable demo-b
     main-is:       Main.hs
     build-depends:
         issue,
-        sublib
+        issue:sublib
diff --git a/cabal-validate/src/Main.hs b/cabal-validate/src/Main.hs
index 7164f3f8cc4..bf5e30a26c2 100644
--- a/cabal-validate/src/Main.hs
+++ b/cabal-validate/src/Main.hs
@@ -290,7 +290,7 @@ runHackageTests opts
 
       let
         -- See #10284 for why this value is pinned.
-        hackageTestsIndexState = "--index-state=2024-08-25"
+        hackageTestsIndexState = "--index-state=2025-01-12"
 
         hackageTest args =
           timedWithCwd