diff --git a/slave-thread.cabal b/slave-thread.cabal
--- a/slave-thread.cabal
+++ b/slave-thread.cabal
@@ -1,7 +1,7 @@
 name:
   slave-thread
 version:
-  0.1.6
+  1.0.0.0
 synopsis:
   A principal solution to ghost threads and silent exceptions
 description:
@@ -79,10 +79,10 @@
     partial-handler >= 0.1.0 && < 1.1,
     list-t >= 0.2.4 && < 0.5,
     mmorph >= 1.0.4 && < 1.1,
-    transformers >= 0.2 && < 0.5,
+    transformers >= 0.3 && < 0.5,
     -- general:
-    base-prelude >= 0.1.3 && < 0.2,
-    base >= 4.5 && < 4.9
+    base-prelude >= 0.1.19 && < 0.2,
+    base >= 4.6 && < 4.9
   ghc-options:
     -funbox-strict-fields
   default-extensions:
@@ -106,8 +106,8 @@
     QuickCheck >= 2.6 && < 2.8,
     -- general:
     SafeSemaphore == 0.10.*,
-    base-prelude >= 0.1.3 && < 0.2,
-    base >= 4.5 && < 4.9
+    base-prelude >= 0.1.19 && < 0.2,
+    base >= 4.6 && < 4.9
   ghc-options:
     -threaded
     "-with-rtsopts=-N"