diff --git a/odbc.cabal b/odbc.cabal
index 2de1618..e6eafda 100644
--- a/odbc.cabal
+++ b/odbc.cabal
@@ -5,7 +5,7 @@ description: Haskell binding to the ODBC API. This has been tested
              suite runs on OS X, Windows and Linux.
 copyright: FP Complete 2018
 maintainer: chrisdone@fpcomplete.com
-version:             0.2.4
+version:             0.2.5
 license:             BSD3
 license-file:        LICENSE
 build-type:          Simple
diff --git a/stack.yaml b/stack.yaml
index ccc1930..f375f0b 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,7 +1,3 @@
-resolver: lts-12.12
+resolver: nightly-2020-09-18
 packages:
 - .
-extra-deps:
-- formatting-6.3.1
-- weigh-0.0.7
-- unliftio-core-0.1.1.0
diff --git a/stack.yaml.lock b/stack.yaml.lock
new file mode 100644
index 0000000..d24c192
--- /dev/null
+++ b/stack.yaml.lock
@@ -0,0 +1,12 @@
+# This file was autogenerated by Stack.
+# You should not edit this file by hand.
+# For more information, please see the documentation at:
+#   https://docs.haskellstack.org/en/stable/lock_files
+
+packages: []
+snapshots:
+- completed:
+    size: 531502
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/nightly/2020/9/18.yaml
+    sha256: edd0f8d6cfbb25109c95f4d6a3126f0ff5b9a03e38b1926e6c5245cf7ed43f49
+  original: nightly-2020-09-18