diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,10 @@
 
     <https://github.com/mstksg/advent-of-code-api/releases/tag/v0.1.2.2>
 
+*   *December 8, 2018*: *BUGFIX* Fix cache directory to separate by year
+
+    <https://github.com/mstksg/advent-of-code-api/releases/tag/v0.1.2.3>
+
 Version 0.1.2.0
 ---------------
 
diff --git a/advent-of-code-api.cabal b/advent-of-code-api.cabal
--- a/advent-of-code-api.cabal
+++ b/advent-of-code-api.cabal
@@ -4,10 +4,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 35e68aade3ca693116d04a94d2d338576feea8f947bc670d878456e2cb8b3e85
+-- hash: 981dd4bf9967973046dfd1d35527c986c3f5609336fd03d8d7faf5944537342a
 
 name:           advent-of-code-api
-version:        0.1.2.2
+version:        0.1.2.3
 synopsis:       Advent of Code REST API bindings
 description:    Haskell bindings for Advent of Code REST API.  Please use responsibly!
                 See README.md or "Advent" module for an introduction and tutorial.
diff --git a/src/Advent.hs b/src/Advent.hs
--- a/src/Advent.hs
+++ b/src/Advent.hs
@@ -286,11 +286,12 @@
 -- | Cache file for a given 'AoC' command
 apiCache
     :: Maybe String           -- ^ session key
+    -> Integer                -- ^ year
     -> AoC a
     -> Maybe FilePath
-apiCache sess = \case
-    AoCPrompt d -> Just $ printf "prompt/%02d.html"        (dayInt d)
-    AoCInput  d -> Just $ printf "input/%s%02d.txt" keyDir (dayInt d)
+apiCache sess yr = \case
+    AoCPrompt d -> Just $ printf "prompt/%04d/%02d.html"        yr (dayInt d)
+    AoCInput  d -> Just $ printf "input/%s%04d/%02d.txt" keyDir yr (dayInt d)
     AoCSubmit{} -> Nothing
   where
     keyDir = case sess of
@@ -309,7 +310,7 @@
       Just c  -> pure (Nothing, c)
       Nothing -> (Just _aSessionKey,) . (</> "advent-of-code-api") <$> getTemporaryDirectory
 
-    let cacher = case apiCache keyMayb a of
+    let cacher = case apiCache keyMayb _aYear a of
           Nothing -> id
           Just fp -> cacheing (cacheDir </> fp) $
                        if _aForce