diff --git a/package.yaml b/package.yaml
index 46c9fcbc7..0f5933a23 100644
--- a/package.yaml
+++ b/package.yaml
@@ -159,7 +159,6 @@ dependencies:
   - insert-ordered-containers
   - topograph
   - network-uri
-  - sajson
 
 other-extensions:
   - GeneralizedNewtypeDeriving
@@ -253,8 +252,6 @@ when:
     else:
       ghc-options:
         - -O -fllvm
-  - condition: flag(sajson)
-    cpp-options: -DSAJSON
 
 # The library contains all of our application code. The executable
 # defined below is just a thin wrapper.
@@ -366,6 +363,3 @@ flags:
     description: Be very pedantic about warnings and errors
     manual: false
     default: true
-  sajson:
-    manual: false
-    default: true
diff --git a/src/Model/Types/TH/JSON.hs b/src/Model/Types/TH/JSON.hs
index 552f8a701..5320d6174 100644
--- a/src/Model/Types/TH/JSON.hs
+++ b/src/Model/Types/TH/JSON.hs
@@ -4,7 +4,6 @@ import ClassyPrelude.Yesod hiding (derivePersistFieldJSON, toPersistValueJSON, f
 import Data.List (foldl)
 import Database.Persist.Sql hiding (toPersistValueJSON, fromPersistValueJSON)
 
-import qualified Data.ByteString as BS
 import qualified Data.ByteString.Lazy as LBS
 import qualified Data.Text.Encoding as Text
 
@@ -15,10 +14,6 @@ import Language.Haskell.TH.Datatype
 
 import Utils.PathPiece
 
-#ifdef SAJSON
-import qualified Data.Sajson as Sajson
-#endif
-
 
 toPersistValueJSON :: ToJSON a => a -> PersistValue
 toPersistValueJSON = PersistDbSpecific . LBS.toStrict . JSON.encode
@@ -29,15 +24,7 @@ fromPersistValueJSON = \case
   PersistByteString bs   -> decodeBS bs
   PersistText       text -> decodeBS $ Text.encodeUtf8 text
   _other                 -> Left "JSON values must be converted from PersistDbSpecific, PersistText, or PersistByteString"
-#ifdef SAJSON
-  where
-    decodeBS bs
-      | compatibleToplevel bs = first pack $ Sajson.eitherDecodeStrict bs
-      | otherwise = first pack $ JSON.eitherDecodeStrict' bs
-    compatibleToplevel bs = any (`BS.isPrefixOf` bs) ["[", "{"]
-#else
   where decodeBS = first pack . JSON.eitherDecodeStrict'
-#endif
 
 sqlTypeJSON :: SqlType
 sqlTypeJSON = SqlOther "jsonb"
diff --git a/stack.yaml b/stack.yaml
index 8308af5cb..57df0f3c6 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -56,9 +56,6 @@ extra-deps:
   - git: git@gitlab2.rz.ifi.lmu.de:uni2work/zip-stream.git
     commit: 843683d024f767de236f74d24a3348f69181a720
 
-  - git: https://github.com/kccqzy/haskell-sajson.git
-    commit: ffc9670f24e308e32979f4e0343e6637a9f72cf4
-
   - acid-state-0.16.0.1@sha256:d43f6ee0b23338758156c500290c4405d769abefeb98e9bc112780dae09ece6f,6207
   - commonmark-0.1.0.2@sha256:fbff7a2ade0ce7d699964a87f765e503a3a9e22542c05f0f02ba7aad64e38af4,3278
   - commonmark-extensions-0.2.0.1@sha256:647aa8dba5fd46984ddedc15c3693c9c4d9655503d42006576bd8f0dadf8cd39,3176
diff --git a/stack.yaml.lock b/stack.yaml.lock
index de0369e60..ce3b7f6f5 100644
--- a/stack.yaml.lock
+++ b/stack.yaml.lock
@@ -233,17 +233,6 @@ packages:
   original:
     git: git@gitlab2.rz.ifi.lmu.de:uni2work/zip-stream.git
     commit: 843683d024f767de236f74d24a3348f69181a720
-- completed:
-    name: sajson
-    version: 0.1.0.0
-    git: https://github.com/kccqzy/haskell-sajson.git
-    pantry-tree:
-      size: 651
-      sha256: faff738ae449bf7046bc9775cf4ce4db115d7c52cbf40040e11e6a232f9d1187
-    commit: ffc9670f24e308e32979f4e0343e6637a9f72cf4
-  original:
-    git: https://github.com/kccqzy/haskell-sajson.git
-    commit: ffc9670f24e308e32979f4e0343e6637a9f72cf4
 - completed:
     hackage: acid-state-0.16.0.1@sha256:d43f6ee0b23338758156c500290c4405d769abefeb98e9bc112780dae09ece6f,6207
     pantry-tree: