diff --git a/src/lib/Web/Data/Stooq/API.hs b/src/lib/Web/Data/Stooq/API.hs
--- a/src/lib/Web/Data/Stooq/API.hs
+++ b/src/lib/Web/Data/Stooq/API.hs
@@ -44,8 +44,7 @@
         high    :: Double,
         low     :: Double,
         close   :: Double,
-        volume  :: Int,
-        openint :: Int
+        volume  :: Int
     } deriving Show
 
 -- | Sends a request for the specified ticker and returns its latest price.
@@ -70,8 +69,7 @@
             high    = Impl.high row,
             low     = Impl.low row,
             close   = Impl.close row,
-            volume  = Impl.volume row,
-            openint = Impl.openint row
+            volume  = Impl.volume row
         }
 
         stooqIntToDay :: Int -> Day
diff --git a/src/utils/Web/Data/Stooq/Internals.hs b/src/utils/Web/Data/Stooq/Internals.hs
--- a/src/utils/Web/Data/Stooq/Internals.hs
+++ b/src/utils/Web/Data/Stooq/Internals.hs
@@ -3,7 +3,9 @@
 module Web.Data.Stooq.Internals where
 
 import Data.Aeson (FromJSON, decode)
-import Data.ByteString.Lazy.Internal (ByteString)
+import Data.ByteString.Lazy (ByteString, empty)
+import Data.ByteString.Char8 (pack)
+import Data.ByteString.Lazy.Search (replace)
 import Data.Text (Text)
 import GHC.Generics (Generic)
 
@@ -16,8 +18,7 @@
         high    :: Double,
         low     :: Double,
         close   :: Double,
-        volume  :: Int,
-        openint :: Int
+        volume  :: Int
     } deriving (Show, Generic)
 
 data StooqResponse =
@@ -29,4 +30,7 @@
 instance FromJSON StooqResponse
 
 parseResponse :: ByteString -> Maybe StooqResponse
-parseResponse = decode
+parseResponse = decode . replace searchedSubstring replacement
+    where
+        searchedSubstring = pack ",\"openint\":}"
+        replacement = pack "}"
diff --git a/stooq-api.cabal b/stooq-api.cabal
--- a/stooq-api.cabal
+++ b/stooq-api.cabal
@@ -1,7 +1,7 @@
 cabal-version:      2.0
 
 name:               stooq-api
-version:            0.2.0.0
+version:            0.3.0.0
 synopsis:           A simple wrapper around stooq.pl API for downloading market data.
 description:
   Here's a simple wrapper around API offered by Stooq.pl.
@@ -26,6 +26,7 @@
   build-depends:      base,
                       aeson,
                       bytestring,
+                      stringsearch,
                       text,
                       time
   hs-source-dirs:     src/utils
@@ -42,6 +43,7 @@
                       utf8-string   >= 1.0.2    && < 1.1,
                       vector        >= 0.12.1   && < 0.13,
                       wreq          >= 0.5.3    && < 0.6,
+                      stringsearch  >= 0.3      && < 0.4,
                       stooq-api-utils
     hs-source-dirs:   src/lib
     default-language: Haskell2010