diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Revision history for pact-time
 
+## 0.2.0.2 -- 2023-05-11
+
+*   Support mtl-2.3
+
 ## 0.2.0.1 -- 2022-10-25
 
 *   Relax upper bound on base
diff --git a/pact-time.cabal b/pact-time.cabal
--- a/pact-time.cabal
+++ b/pact-time.cabal
@@ -1,6 +1,6 @@
 cabal-version: 2.4
 name: pact-time
-version: 0.2.0.1
+version: 0.2.0.2
 synopsis: Time Library for Pact
 Description:
     A minimal time library for usage with the [Pact Smart Contract
@@ -27,13 +27,15 @@
 copyright: Copyright (c) 2021 Kadena LLC.
 category: Data, System
 tested-with:
-    GHC==9.4.2
-    GHC==9.2.4
-    GHC==9.0.2
+    GHC==9.6
+    GHC==9.4
+    GHC==9.2
+    GHC==9.0
     GHC==8.10.7
-    GHC==8.8.4
-    GHC==8.6.5
+
 extra-source-files:
+
+extra-doc-files:
     README.md
     CHANGELOG.md
 
diff --git a/src/Pact/Time/Format/Internal.hs b/src/Pact/Time/Format/Internal.hs
--- a/src/Pact/Time/Format/Internal.hs
+++ b/src/Pact/Time/Format/Internal.hs
@@ -280,7 +280,7 @@
     }
 
 toWeekDate :: ModifiedJulianDay -> WeekDate
-toWeekDate = join (toWeekOrdinal . toOrdinalDate)
+toWeekDate d = toWeekOrdinal (toOrdinalDate d) d
 {-# INLINEABLE toWeekDate #-}
 
 fromWeekDate :: WeekDate -> ModifiedJulianDay