diff --git a/Changelog.md b/Changelog.md
index 3ce85f350..e708fb61e 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -9,7 +9,7 @@
  * [Add `IsList` instances for strict and lazy `ByteString` and for `ShortByteString`](https://github.com/haskell/bytestring/pull/219)
  * [Add `createUpToN'` and `unsafeCreateUpToN'` to `Data.ByteString.Internal`](https://github.com/haskell/bytestring/pull/245)
  * [Add `boundedPrim` to `Data.ByteString.Builder.Prim.Internal` and deprecate `boudedPrim`](https://github.com/haskell/bytestring/pull/246)
- * Add `indexMaybe` for indexing that returns `Maybe`
+ * Add `indexMaybe` and synonym `(!?)` for indexing that returns `Maybe`
  * [Deprecate the `Data.ByteString.Lazy.Builder` and `Data.ByteString.Lazy.Builder.{ASCII,Extras}` modules](https://github.com/haskell/bytestring/pull/250)
  * [Fix documented complexity of `Data.ByteString.Lazy.length`](https://github.com/haskell/bytestring/pull/255)
  * [Assorted documentation fixes](https://github.com/haskell/bytestring/pull/248)
diff --git a/Data/ByteString.hs b/Data/ByteString.hs
index a6c1b8bfb..0d24be2ea 100644
--- a/Data/ByteString.hs
+++ b/Data/ByteString.hs
@@ -1103,7 +1103,7 @@ index ps n
 --
 -- > 0 <= n < length bs
 --
--- @since 0.10.10.0
+-- @since 0.10.10.1
 indexMaybe :: ByteString -> Int -> Maybe Word8
 indexMaybe ps n
     | n < 0          = Nothing
@@ -1115,7 +1115,7 @@ indexMaybe ps n
 --
 -- > 0 <= n < length bs
 --
--- @since 0.10.10.0
+-- @since 0.10.10.1
 (!?) :: ByteString -> Int -> Maybe Word8
 (!?) = indexMaybe
 {-# INLINE (!?) #-}
diff --git a/Data/ByteString/Char8.hs b/Data/ByteString/Char8.hs
index 466468c11..2dd3d4eca 100644
--- a/Data/ByteString/Char8.hs
+++ b/Data/ByteString/Char8.hs
@@ -650,7 +650,7 @@ index = (w2c .) . B.index
 --
 -- > 0 <= n < length bs
 --
--- @since 0.10.10.0
+-- @since 0.10.10.1
 indexMaybe :: ByteString -> Int -> Maybe Char
 indexMaybe = ((fmap w2c) .) . B.indexMaybe
 {-# INLINE indexMaybe #-}
@@ -659,7 +659,7 @@ indexMaybe = ((fmap w2c) .) . B.indexMaybe
 --
 -- > 0 <= n < length bs
 --
--- @since 0.10.10.0
+-- @since 0.10.10.1
 (!?) :: ByteString -> Int -> Maybe Char
 (!?) = indexMaybe
 {-# INLINE (!?) #-}
diff --git a/Data/ByteString/Lazy.hs b/Data/ByteString/Lazy.hs
index a434820a9..d5d62df90 100644
--- a/Data/ByteString/Lazy.hs
+++ b/Data/ByteString/Lazy.hs
@@ -901,7 +901,7 @@ index cs0 i         = index' cs0 i
 --
 -- > 0 <= n < length bs
 --
--- @since 0.10.10.0
+-- @since 0.10.10.1
 indexMaybe :: ByteString -> Int64 -> Maybe Word8
 indexMaybe _ i | i < 0 = Nothing
 indexMaybe cs0 i       = index' cs0 i
@@ -915,7 +915,7 @@ indexMaybe cs0 i       = index' cs0 i
 --
 -- > 0 <= n < length bs
 --
--- @since 0.10.10.0
+-- @since 0.10.10.1
 (!?) :: ByteString -> Int64 -> Maybe Word8
 (!?) = indexMaybe
 {-# INLINE (!?) #-}
diff --git a/Data/ByteString/Lazy/Char8.hs b/Data/ByteString/Lazy/Char8.hs
index a41a3902d..48f668ebe 100644
--- a/Data/ByteString/Lazy/Char8.hs
+++ b/Data/ByteString/Lazy/Char8.hs
@@ -533,7 +533,7 @@ index = (w2c .) . L.index
 --
 -- > 0 <= n < length bs
 --
--- @since 0.10.10.0
+-- @since 0.10.10.1
 indexMaybe :: ByteString -> Int64 -> Maybe Char
 indexMaybe = ((fmap w2c) .) . L.indexMaybe
 {-# INLINE indexMaybe #-}
@@ -542,7 +542,7 @@ indexMaybe = ((fmap w2c) .) . L.indexMaybe
 --
 -- > 0 <= n < length bs
 --
--- @since 0.10.10.0
+-- @since 0.10.10.1
 (!?) :: ByteString -> Int64 -> Maybe Char
 (!?) = indexMaybe
 {-# INLINE (!?) #-}
diff --git a/Data/ByteString/Short/Internal.hs b/Data/ByteString/Short/Internal.hs
index 20ea5b4cb..46d2b6443 100644
--- a/Data/ByteString/Short/Internal.hs
+++ b/Data/ByteString/Short/Internal.hs
@@ -220,7 +220,7 @@ index sbs i
 --
 -- > 0 <= n < length bs
 --
--- @since 0.10.10.0
+-- @since 0.10.10.1
 indexMaybe :: ShortByteString -> Int -> Maybe Word8
 indexMaybe sbs i
   | i >= 0 && i < length sbs = Just $ unsafeIndex sbs i
@@ -230,7 +230,7 @@ indexMaybe sbs i
 --
 -- > 0 <= n < length bs
 --
--- @since 0.10.10.0
+-- @since 0.10.10.1
 (!?) :: ShortByteString -> Int -> Maybe Word8
 (!?) = indexMaybe