diff --git a/Data/SortedList.hs b/Data/SortedList.hs
--- a/Data/SortedList.hs
+++ b/Data/SortedList.hs
@@ -46,6 +46,8 @@
     -- * @map@ function
   , map
   , mapDec
+    -- * @traverse@ function
+  , traverse
     -- * Unfolding
   , unfoldr
     -- * Others
@@ -61,7 +63,7 @@
 import Prelude hiding
   ( take, drop, splitAt, filter
   , repeat, replicate, iterate
-  , null, map, reverse
+  , null, map, reverse, traverse
   , span, takeWhile, dropWhile
 #if !MIN_VERSION_base(4,8,0)
   , foldr, foldl
@@ -69,7 +71,7 @@
     )
 import qualified Data.List as List
 import Control.DeepSeq (NFData (..))
-import Data.Foldable (Foldable (..))
+import Data.Foldable (Foldable (..), foldrM)
 --
 #if MIN_VERSION_base(4,5,0) && !MIN_VERSION_base(4,9,0)
 import Data.Monoid ((<>))
@@ -363,6 +365,14 @@
 "SortedList:map/mapDec" forall f g xs. map f (mapDec g xs) = map (f . g) xs
 "SortedList:mapDec/id"  forall xs.     mapDec id xs = xs
   #-}
+
+-- | Traverse a sorted list with a function that returns in a monad.
+--   The same performance observations apply here than in 'map', as
+--   changing the values may involve reordering the list.
+--
+--   @since 0.2.3.0
+traverse :: (Monad m, Ord b) => (a -> m b) -> SortedList a -> m (SortedList b)
+traverse f = foldrM (\x xs -> liftA2 insert (f x) $ pure xs) mempty
 
 #if MIN_VERSION_base(4,6,0)
 
diff --git a/LICENSE b/LICENSE
deleted file mode 100644
--- a/LICENSE
+++ /dev/null
@@ -1,30 +0,0 @@
-Copyright (c) 2023, Daniel Casanueva
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-    * Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
-
-    * Redistributions in binary form must reproduce the above
-      copyright notice, this list of conditions and the following
-      disclaimer in the documentation and/or other materials provided
-      with the distribution.
-
-    * Neither the name of Daniel Casanueva nor the names of other
-      contributors may be used to endorse or promote products derived
-      from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,8 @@
+## 0.2.3.0
+* Update metadata.
+* Add `traverse`.
+* License changed from BSD3 to MIT for consistency.
+
 ## 0.2.2.0
 * Add `deleteAll`.
 
diff --git a/license b/license
new file mode 100644
--- /dev/null
+++ b/license
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 Daniel Díaz Casanueva
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/sorted-list.cabal b/sorted-list.cabal
--- a/sorted-list.cabal
+++ b/sorted-list.cabal
@@ -1,5 +1,5 @@
 name:                sorted-list
-version:             0.2.2.0
+version:             0.2.3.0
 synopsis:            Type-enforced sorted lists and related functions.
 description:         Type-enforced sorted lists and related functions.
                      .
@@ -24,11 +24,11 @@
                      .
                      If you are missing a feature, do not hesitate
                      to ask by opening an issue at the bug-tracker.
-license:             BSD3
-license-file:        LICENSE
-author:              Daniel Casanueva (daniel.casanueva `at` proton.me)
-maintainer:          Daniel Casanueva (daniel.casanueva `at` proton.me)
-bug-reports:         https://gitlab.com/daniel-casanueva/haskell/sorted-list/-/issues
+license:             MIT
+license-file:        license
+author:              Daniel Casanueva (coding `at` danielcasanueva.eu)
+maintainer:          Daniel Casanueva (coding `at` danielcasanueva.eu)
+bug-reports:         https://codeberg.org/daniel-casanueva/sorted-list/issues
 category:            Data
 build-type:          Simple
 cabal-version:       1.18
@@ -46,7 +46,7 @@
   type: exitcode-stdio-1.0
   hs-source-dirs: bench
   main-is: map.hs
-  ghc-options: -O2 -Wall
+  ghc-options: -Wall
   build-depends: base == 4.*
                , sorted-list
                , criterion