diff --git a/hledger-api/hledger-api.cabal b/hledger-api/hledger-api.cabal
index 40c07aedf..c6bbdf508 100644
--- a/hledger-api/hledger-api.cabal
+++ b/hledger-api/hledger-api.cabal
@@ -60,7 +60,7 @@ executable hledger-api
     , safe
     , servant-server >= 0.10
     , servant-swagger
-    , swagger2 >= 2.0 && < 2.1.5
+    , swagger2 >= 2.0 && < 2.2
     , text
     , transformers
     , wai
diff --git a/hledger-api/hledger-api.hs b/hledger-api/hledger-api.hs
index 81561f065..a1cb21e7d 100644
--- a/hledger-api/hledger-api.hs
+++ b/hledger-api/hledger-api.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP                 #-}
 {-# LANGUAGE DataKinds           #-}
 {-# LANGUAGE DeriveGeneric       #-}
 {-# LANGUAGE OverloadedStrings   #-}
@@ -212,6 +213,9 @@ instance ToSchema Side
 instance ToSchema DigitGroupStyle
 instance ToSchema MixedAmount
 instance ToSchema Price
+#if MIN_VERSION_swagger2(2,1,5)
+  where declareNamedSchema = genericDeclareNamedSchemaUnrestricted defaultSchemaOptions
+#endif
 instance ToSchema MarketPrice
 instance ToSchema PostingType
 instance ToSchema Posting
diff --git a/hledger-api/package.yaml b/hledger-api/package.yaml
index 8c397f0e3..a8b206f40 100644
--- a/hledger-api/package.yaml
+++ b/hledger-api/package.yaml
@@ -46,7 +46,7 @@ dependencies:
 - safe
 - servant-server >= 0.10
 - servant-swagger
-- swagger2 >= 2.0 && < 2.1.5
+- swagger2 >= 2.0 && < 2.2
 - text
 - transformers
 - wai