diff --git a/peregrin.cabal b/peregrin.cabal
--- a/peregrin.cabal
+++ b/peregrin.cabal
@@ -1,12 +1,12 @@
+Cabal-version:       2.2
 Name:                peregrin
-Version:             0.2.0
+Version:             0.3.0
 Synopsis:            Database migration support for use in other libraries.
 Description:         Database migration support for use in other libraries.
                      Currently only supports PostgreSQL.
 License:             MIT
 License-file:        LICENSE
 Category:            Database
-Cabal-version:       >=1.10
 Build-type:          Simple
 Author:              Bardur Arantsson
 Maintainer:          Bardur Arantsson <bardur@scientician.net>
@@ -18,7 +18,7 @@
 Library
   build-depends:      base >= 4.9 && < 5
                     , bytestring >= 0.10 && < 0.11
-                    , postgresql-simple >= 0.5.2.1 && < 0.6
+                    , postgresql-simple >= 0.5.2.1 && < 0.7
                     , text >= 1.1.0 && < 2
   default-language:   Haskell2010
   ghc-options:        -Wall
@@ -31,8 +31,8 @@
   hs-source-dirs:     src-test
   main-is:            Main.hs
   build-depends:      base == 4.*
-                    , pg-harness-client >= 0.4.0 && < 0.5.0
-                    , postgresql-simple >= 0.5.2.1 && < 0.6
+                    , pg-harness-client >= 0.6.0 && < 0.7.0
+                    , postgresql-simple >= 0.5.2.1 && < 0.7
                     , resource-pool >= 0.2.1 && < 0.3
                     , text >= 1.0 && < 2
                     , transformers >= 0.5.2 && < 0.6
diff --git a/src-test/Database/PeregrinSpec.hs b/src-test/Database/PeregrinSpec.hs
--- a/src-test/Database/PeregrinSpec.hs
+++ b/src-test/Database/PeregrinSpec.hs
@@ -49,7 +49,14 @@
         -- Verify:
         assertCanSelectFromX
 
-      it "throws an error if SQL is changed for a given change set ID" $ do
+      it "throws an error if SQL is changed for a given change set ID (single call)" $ do
+        -- Exercise:
+        migrate' schema [ (cid0, createXSql, ())
+                        , (cid0, createXSqlBad, ()) ]
+          -- Verify: Should throw here
+          `shouldThrow` (== MigrationModifiedError cid0)
+
+      it "throws an error if SQL is changed for a given change set ID (multiple calls)" $ do
         -- Exercise:
         migrate' schema [ (cid0, createXSql, ()) ]
         migrate' schema [ (cid0, createXSqlBad, ()) ]