diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,17 @@
 
 All notable changes to the LaunchDarkly Haskell Server-side SDK will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
 
+## [4.0.2](https://github.com/launchdarkly/haskell-server-sdk/compare/4.0.1...4.0.2) (2024-02-01)
+
+
+### Bug Fixes
+
+* **deps:** Drop explicit dependency on vector ([#69](https://github.com/launchdarkly/haskell-server-sdk/issues/69)) ([3bb826d](https://github.com/launchdarkly/haskell-server-sdk/commit/3bb826da77f34983abebe84612dfa9d7f8c346c9))
+
+## [4.0.1] - 2023-10-26
+### Removed:
+- Eliminated unnecessary and noisy log message
+
 ## [4.0.0] - 2023-02-21
 The latest version of this SDK supports LaunchDarkly's new custom contexts feature. Contexts are an evolution of a previously-existing concept, "users." Contexts let you create targeting rules for feature flags based on a variety of different information, including attributes pertaining to users, organizations, devices, and more. You can even combine contexts to create "multi-contexts."
 
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # LaunchDarkly Server-side SDK for Haskell
 
-[![CircleCI](https://circleci.com/gh/launchdarkly/haskell-server-sdk.svg?style=svg)](https://circleci.com/gh/launchdarkly/haskell-server-sdk)
+[![Run CI](https://github.com/launchdarkly/haskell-server-sdk/actions/workflows/ci.yml/badge.svg)](https://github.com/launchdarkly/haskell-server-sdk/actions/workflows/ci.yml)
 
 The LaunchDarkly Server-side SDK for Haskell is designed primarily for use in multi-user systems such as web servers and applications. It follows the server-side LaunchDarkly model for multi-user contexts. It is not intended for use in desktop and embedded systems applications.
 
diff --git a/launchdarkly-server-sdk.cabal b/launchdarkly-server-sdk.cabal
--- a/launchdarkly-server-sdk.cabal
+++ b/launchdarkly-server-sdk.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           launchdarkly-server-sdk
-version:        4.0.1
+version:        4.0.2
 synopsis:       Server-side SDK for integrating with LaunchDarkly
 description:    Please see the README on GitHub at <https://github.com/launchdarkly/haskell-server-sdk#readme>
 category:       Web
@@ -124,7 +124,6 @@
     , time >=1.9.3 && <1.13
     , unordered-containers >=0.2.10.0 && <0.3
     , uuid >=1.3.13 && <1.4
-    , vector >=0.12.1.2 && <0.13
     , yaml >=0.11.5.0 && <0.12
   default-language: Haskell2010
 
@@ -235,6 +234,5 @@
     , time >=1.9.3 && <1.13
     , unordered-containers >=0.2.10.0 && <0.3
     , uuid >=1.3.13 && <1.4
-    , vector >=0.12.1.2 && <0.13
     , yaml >=0.11.5.0 && <0.12
   default-language: Haskell2010
diff --git a/src/LaunchDarkly/Server/Client/Internal.hs b/src/LaunchDarkly/Server/Client/Internal.hs
--- a/src/LaunchDarkly/Server/Client/Internal.hs
+++ b/src/LaunchDarkly/Server/Client/Internal.hs
@@ -21,7 +21,7 @@
 
 -- | The version string for this library.
 clientVersion :: Text
-clientVersion = "4.0.1"
+clientVersion = "4.0.2" -- x-release-please-version
 
 -- |
 -- Client is the LaunchDarkly client. Client instances are thread-safe.
diff --git a/src/LaunchDarkly/Server/Context/Internal.hs b/src/LaunchDarkly/Server/Context/Internal.hs
--- a/src/LaunchDarkly/Server/Context/Internal.hs
+++ b/src/LaunchDarkly/Server/Context/Internal.hs
@@ -45,7 +45,7 @@
 import Data.Set (Set)
 import qualified Data.Set as S
 import Data.Text (Text, intercalate, replace, unpack)
-import qualified Data.Vector as V
+import qualified GHC.Exts as Exts (fromList)
 import GHC.Generics (Generic)
 import LaunchDarkly.AesonCompat (KeyMap, deleteKey, emptyObject, foldrWithKey, fromList, insertKey, keyMapUnion, lookupKey, mapValues, objectKeys, singleton, toList)
 import LaunchDarkly.Server.Config (Config)
@@ -339,7 +339,7 @@
             ( "_meta"
             , case privateAttributes of
                 Nothing -> Null
-                Just attrs -> toJSON $ singleton "privateAttributes" (Array $ V.fromList $ map toJSON $ S.elems attrs)
+                Just attrs -> toJSON $ singleton "privateAttributes" (Array $ Exts.fromList $ map toJSON $ S.elems attrs)
             )
         ]
 
@@ -413,7 +413,7 @@
 redactSingleContext :: Bool -> SingleContext -> Set Reference -> Value
 redactSingleContext includeKind context privateAttributes =
     let State {context = redactedContext, redacted} = foldr applyRedaction State {context = fromList $ getMapOfRedactableProperties context, redacted = []} privateAttributes
-        redactedValues = Array $ V.fromList $ map String redacted
+        redactedValues = Array $ Exts.fromList $ map String redacted
         required = fromList $ getMapOfRequiredProperties includeKind context
      in case redacted of
             [] -> Object $ keyMapUnion redactedContext required
diff --git a/src/LaunchDarkly/Server/Evaluate.hs b/src/LaunchDarkly/Server/Evaluate.hs
--- a/src/LaunchDarkly/Server/Evaluate.hs
+++ b/src/LaunchDarkly/Server/Evaluate.hs
@@ -22,7 +22,6 @@
 import Data.Text (Text)
 import qualified Data.Text as T
 import Data.Text.Encoding (encodeUtf8)
-import qualified Data.Vector as V
 import Data.Word (Word8)
 import GHC.Natural (Natural)
 
@@ -334,7 +333,7 @@
         Nothing -> Right False
         Just ctx -> case getValueForReference (getField @"attribute" clause) ctx of
             Null -> Right False
-            Array a -> Right $ maybeNegate clause $ V.any (matchAnyClauseValue clause) a
+            Array a -> Right $ maybeNegate clause $ any (matchAnyClauseValue clause) a
             x -> Right $ maybeNegate clause $ matchAnyClauseValue clause x
 
 clauseMatchesContext :: (Monad m, LaunchDarklyStoreRead store m) => store -> Clause -> Context -> HS.HashSet Text -> m (Either Text Bool)
diff --git a/test/Spec/Context.hs b/test/Spec/Context.hs
--- a/test/Spec/Context.hs
+++ b/test/Spec/Context.hs
@@ -8,8 +8,8 @@
 import Data.Maybe (fromJust)
 import qualified Data.Set as S
 import Data.Text (Text)
-import qualified Data.Vector as V
-import LaunchDarkly.AesonCompat (fromList, lookupKey)
+import GHC.Exts (fromList)
+import LaunchDarkly.AesonCompat (lookupKey)
 import LaunchDarkly.Server.Config (configSetAllAttributesPrivate, makeConfig)
 import LaunchDarkly.Server.Context
 import LaunchDarkly.Server.Context.Internal (redactContext)
@@ -112,7 +112,7 @@
                 makeContext "user-key" "user"
                     & withName "Example"
                     & withAnonymous False
-                    & withAttribute "groups" (Array $ V.fromList ["beta_testers"])
+                    & withAttribute "groups" (Array $ fromList ["beta_testers"])
                     & withAttribute "address" address
                     & withAttribute "preferences" preferences
                     & withAttribute "complex/and-weird~attribute" "nailed it"
@@ -133,7 +133,7 @@
                 assertEqual "" (Bool False) $ getValueForReference (R.makeReference "anonymous") user
                 assertEqual "" "Chicago" $ getValueForReference (R.makeReference "/address/city") user
                 assertEqual "" "baseball" $ getValueForReference (R.makeReference "/preferences/favorites/sport") user
-                assertEqual "" (Array $ V.fromList ["beta_testers"]) $ getValueForReference (R.makeReference "/groups") user
+                assertEqual "" (Array $ fromList ["beta_testers"]) $ getValueForReference (R.makeReference "/groups") user
                 assertEqual "" Null $ getValueForReference (R.makeReference "/groups/0") user
                 assertEqual "" "nailed it" $ getValueForReference (R.makeReference "/complex~1and-weird~0attribute") user
             )
@@ -176,7 +176,7 @@
                 setAndVerifyAttribute "anonymous" (Bool False) (Bool False) user
                 setAndVerifyAttribute "anonymous" "false" (Bool True) user
                 setAndVerifyAttribute "_meta" "anything" Null user
-                setAndVerifyAttribute "privateAttributeNames" (Array $ V.fromList ["name"]) Null user
+                setAndVerifyAttribute "privateAttributeNames" (Array $ fromList ["name"]) Null user
 
                 setAndVerifyAttribute "kind" "org" "multi" multi
                 setAndVerifyAttribute "key" "new-key" Null multi
@@ -185,7 +185,7 @@
                 setAndVerifyAttribute "anonymous" (Bool False) Null multi
                 setAndVerifyAttribute "anonymous" "false" Null multi
                 setAndVerifyAttribute "_meta" "anything" Null multi
-                setAndVerifyAttribute "privateAttributeNames" (Array $ V.fromList ["name"]) Null multi
+                setAndVerifyAttribute "privateAttributeNames" (Array $ fromList ["name"]) Null multi
 
                 setAndVerifyAttribute "kind" "org" Null invalid
                 setAndVerifyAttribute "key" "new-key" Null invalid
@@ -194,7 +194,7 @@
                 setAndVerifyAttribute "anonymous" (Bool False) Null invalid
                 setAndVerifyAttribute "anonymous" "false" Null invalid
                 setAndVerifyAttribute "_meta" "anything" Null invalid
-                setAndVerifyAttribute "privateAttributeNames" (Array $ V.fromList ["name"]) Null invalid
+                setAndVerifyAttribute "privateAttributeNames" (Array $ fromList ["name"]) Null invalid
             )
 
 canParseFromLegacyUserFormat :: Test
@@ -263,7 +263,7 @@
     config = makeConfig "sdk-key"
 
     address = Object $ fromList [("city", "Chicago"), ("state", "IL")]
-    hobbies = (Array $ V.fromList ["coding", "reading"])
+    hobbies = (Array $ fromList ["coding", "reading"])
 
     context =
         makeContext "user-key" "user"
@@ -278,7 +278,7 @@
     decodedAsValue = fromJust $ decode jsonByteString :: Value
     decodedIntoMap = case decodedAsValue of (Object o) -> o; _ -> error "expected object"
     meta = case lookupKey "_meta" decodedIntoMap of (Just (Object o)) -> o; _ -> error "expected object"
-    expectedRedacted = Array $ V.fromList ["/address/city", "name"]
+    expectedRedacted = Array $ fromList ["/address/city", "name"]
     expectedAddress = Object $ fromList [("state", "IL")]
 
 canRedactAllAttributesCorrectly :: Test
@@ -301,13 +301,13 @@
             & withAttribute "firstName" "Sandy"
             & withAttribute "lastName" "Beaches"
             & withAttribute "address" address
-            & withAttribute "hobbies" (Array $ V.fromList ["coding", "reading"])
+            & withAttribute "hobbies" (Array $ fromList ["coding", "reading"])
 
     jsonByteString = encode $ redactContext config context
     decodedAsValue = fromJust $ decode jsonByteString :: Value
     decodedIntoMap = case decodedAsValue of (Object o) -> o; _ -> error "expected object"
     meta = case lookupKey "_meta" decodedIntoMap of (Just (Object o)) -> o; _ -> error "expected object"
-    expectedRedacted = Array $ V.fromList ["address", "firstName", "hobbies", "lastName", "name"]
+    expectedRedacted = Array $ fromList ["address", "firstName", "hobbies", "lastName", "name"]
     expectedAddress = Object $ fromList [("state", "IL")]
 
 allTests :: Test