diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b82835e..2051b59 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -85,7 +85,7 @@ jobs:
         uses: swift-actions/setup-swift@v2.1.0
       - name: Install SwiftLint
         run: |
-          curl -L https://github.com/realm/SwiftLint/releases/download/0.54.0/swiftlint_linux.zip -o swiftlint.zip
+          curl -L https://github.com/realm/SwiftLint/releases/download/0.57.0/swiftlint_linux.zip -o swiftlint.zip
           unzip swiftlint.zip -d swiftlint
           ./swiftlint/swiftlint --version
       - name: Run SwiftLint
diff --git a/Sources/SwiftBeanCountTax/TaxCalculator.swift b/Sources/SwiftBeanCountTax/TaxCalculator.swift
index 92246c3..786bc58 100644
--- a/Sources/SwiftBeanCountTax/TaxCalculator.swift
+++ b/Sources/SwiftBeanCountTax/TaxCalculator.swift
@@ -131,8 +131,8 @@ public enum TaxCalculator {
         return try issuers.compactMap { issuer throws -> TaxSlip? in
             let issuerTaxSlipRelevantAccounts = taxSlipRelevantAccounts.filter { $0.metaData[MetaDataKeys.issuer] ?? "" == issuer }
             // collect all transactions which have a posting to a split account AND an account for this issuer
-            var splitTransactions = taxYearTransactions.filter { $0.postings.contains { issuerTaxSlipRelevantAccounts.map { $0.name }.contains($0.accountName) }
-              && $0.postings.contains { splitAccounts.map { $0.0 }.contains($0.accountName.fullName) }
+            var splitTransactions = taxYearTransactions.filter { $0.postings.contains { issuerTaxSlipRelevantAccounts.map(\.name).contains($0.accountName) }
+              && $0.postings.contains { splitAccounts.map(\.0).contains($0.accountName.fullName) }
             }
             let entries = issuerTaxSlipRelevantAccounts.flatMap { account -> [TaxSlipEntry] in
                 let postings = taxYearTransactions.flatMap { $0.postings.filter { $0.accountName == account.name } }
@@ -146,10 +146,10 @@ public enum TaxCalculator {
                 // split accounts
                 entries.append(contentsOf: splitAccounts.compactMap { splitAccount -> TaxSlipEntry? in
                     // filter splitTransactions for transactions for the current account, and get the posting to the split account
-                    let splitPostings = splitTransactions.filter { [account.name.fullName, splitAccount.0].allSatisfy($0.postings.map { $0.accountName.fullName }.contains) }
+                    let splitPostings = splitTransactions.filter { [account.name.fullName, splitAccount.0].allSatisfy($0.postings.map(\.accountName.fullName).contains) }
                         .flatMap { $0.postings.filter { $0.accountName.fullName == splitAccount.0 } }
                     // rmove the processed transactions - otherwise when a transaction has multiple accounts and a split account, it would be counted multiple times
-                    splitTransactions.removeAll { [account.name.fullName, splitAccount.0].allSatisfy($0.postings.map { $0.accountName.fullName }.contains) }
+                    splitTransactions.removeAll { [account.name.fullName, splitAccount.0].allSatisfy($0.postings.map(\.accountName.fullName).contains) }
                     if let (value, originalValue) = getValues(commodity: commodity, postings: splitPostings) {
                         return TaxSlipEntry(symbol: symbol, name: name, box: splitAccount.1, value: value, originalValue: originalValue)
                     }
diff --git a/Sources/SwiftBeanCountTax/TaxSlip.swift b/Sources/SwiftBeanCountTax/TaxSlip.swift
index 10c114d..3090e96 100644
--- a/Sources/SwiftBeanCountTax/TaxSlip.swift
+++ b/Sources/SwiftBeanCountTax/TaxSlip.swift
@@ -111,7 +111,7 @@ public struct TaxSlip: Identifiable {
 
     /// Boxes which have a value on the slip
     public var boxes: [String] {
-        Array(Set(entries.map { $0.box })).sorted(by: boxNumberSort)
+        Array(Set(entries.map(\.box))).sorted(by: boxNumberSort)
     }
 
     /// If a slip is split by symbols (e.g. stocks), this contains the list of symbols, otherwise is is empty
@@ -166,7 +166,7 @@ extension TaxSlipRow: CustomStringConvertible {
     }
 
     public var description: String {
-        "\(displayName != nil ? "\(displayName!):\n" : "")\(values.sorted(by: rowValueBoxNumberSort).map { $0.description }.joined(separator: "\n") )"
+        "\(displayName != nil ? "\(displayName!):\n" : "")\(values.sorted(by: rowValueBoxNumberSort).map(\.description).joined(separator: "\n") )"
     }
 }
 
@@ -193,7 +193,7 @@ extension TaxSlip: CustomStringConvertible {
     }
 
     public var description: String {
-        "\(header)\n\(rows.map { $0.description }.joined(separator: "\n"))\(symbols.isEmpty ? "" : "\nSum:\n\(sumRow.description)")"
+        "\(header)\n\(rows.map(\.description).joined(separator: "\n"))\(symbols.isEmpty ? "" : "\nSum:\n\(sumRow.description)")"
     }
 }