diff --git a/Main.hs b/Main.hs
--- a/Main.hs
+++ b/Main.hs
@@ -95,12 +95,12 @@
   jnl' <- readJournalFiles ledgerInputOptions (reverse (optInput opts)) >>= either fail return
   interestAcc <- case args of
                    []    -> commandLineError "required argument ACCOUNT is missing\n"
-                   [acc] -> return acc
+                   [acc] -> return $ T.pack acc
                    _     -> commandLineError "only one interest ACCOUNT may be specified\n"
   let jnl = filterJournalTransactions (Acct (toRegex' interestAcc)) jnl'
       ts  = sortOn tdate (jtxns jnl)
       cfg = Config
-            { interestAccount = T.pack interestAcc
+            { interestAccount = interestAcc
             , sourceAccount = T.pack (optSourceAcc opts)
             , targetAccount = T.pack (optTargetAcc opts)
             , dayCountConvention = fromJust (optDCC opts)
@@ -114,4 +114,4 @@
       result
         | optVerbose opts = ts' ++ ts
         | otherwise       = ts'
-  mapM_ (putStr . showTransactionUnelided) (sortOn tdate result)
+  mapM_ (putStr . T.unpack . showTransaction) (sortOn tdate result)
diff --git a/hledger-interest.cabal b/hledger-interest.cabal
--- a/hledger-interest.cabal
+++ b/hledger-interest.cabal
@@ -1,5 +1,5 @@
 Name:                   hledger-interest
-Version:                1.6.0
+Version:                1.6.1
 Synopsis:               computes interest for a given account
 License:                BSD3
 License-file:           LICENSE
@@ -11,8 +11,8 @@
 Cabal-version:          >= 1.10
 Extra-source-files:     README.md
 Stability:              stable
-tested-with:            GHC == 8.0.2, GHC == 8.2.2, GHC == 8.4.4, GHC == 8.6.5
-                      , GHC == 8.8.4, GHC == 8.10.2
+tested-with:            GHC == 8.2.2, GHC == 8.4.4, GHC == 8.6.5, GHC == 8.8.4
+                      , GHC == 8.10.4
 
 Description:
  hledger-interest is a small command-line utility based on Simon
@@ -119,7 +119,7 @@
 Executable hledger-interest
   default-language:     Haskell2010
   Main-is:              Main.hs
-  Build-depends:        base >= 3 && < 5, hledger-lib == 1.19.*, time, mtl, Cabal, Decimal, text
+  Build-depends:        base >= 3 && < 5, hledger-lib == 1.21.*, time, mtl, Cabal, Decimal, text
   other-modules:        Hledger.Interest
                         Hledger.Interest.DayCountConvention
                         Hledger.Interest.Rate