diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Revision history for base64-lens
 
+## 0.1.2.0
+
+* Add lenient isos and patterns
+
+## 0.1.1.0
+
+* Add lazy optics + patterns
+
 ## 0.1.0.0
 
 * First version. Released on an unsuspecting world.
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -11,8 +11,12 @@
 
 ```haskell
 pattern Hex :: ByteString -> ByteString
+pattern Base16 :: ByteString -> ByteString
+pattern Base16Lenient :: ByteString -> ByteString
 -- and
 pattern Hex :: Text -> Text
+pattern Base16 :: Text -> Text
+pattern Base16Lenient :: Text -> Text
 ```
 
 These provide a convenient high level interface for passing Base16 encoded values.
@@ -25,10 +29,12 @@
 
 ```haskell
 _Hex :: Prism' ByteString ByteString
-
+_Base16 :: Prism' ByteString ByteString
+_Base16Lenient :: Iso' ByteString ByteString
 -- and
-
 _Hex:: Prism' Text Text
+_Base16 :: Prism' Text Text
+_Base16Lenient :: Iso' Text Text
 ```
 
 If a particular structure has a `Lens` into some `Text` or `ByteString` value they might want to encode (or decode), then composing such a `Lens` with these `Prisms` yields an affine `Traversal`, resulting in a structure which has the focus of its `Lens` encoded as or decoded from Base16.
diff --git a/base16-lens.cabal b/base16-lens.cabal
--- a/base16-lens.cabal
+++ b/base16-lens.cabal
@@ -1,6 +1,6 @@
 cabal-version:      1.24
 name:               base16-lens
-version:            0.1.1.0
+version:            0.1.2.0
 synopsis:           Optics for the Base16 library
 description:        Prisms and pattern synonyms for the Base16 library
 homepage:           https://github.com/emilypi/base16-lens
@@ -38,7 +38,7 @@
 
   build-depends:
       base        >=4.10   && <5
-    , base16      >=0.1.3  && <0.2
+    , base16      >=0.2.0  && <0.3
     , bytestring  >=0.10   && <0.11
     , lens        >=4.0    && <5
     , text        >=1.2    && <1.3
diff --git a/src/Data/ByteString/Base16/Lens.hs b/src/Data/ByteString/Base16/Lens.hs
--- a/src/Data/ByteString/Base16/Lens.hs
+++ b/src/Data/ByteString/Base16/Lens.hs
@@ -9,16 +9,19 @@
 -- Stability    : Experimental
 -- Portability  : non-portable
 --
--- This module contains 'Prism''s for Base16-encoding and
+-- This module contains 'Prism''s and 'Iso''s for Base16-encoding and
 -- decoding 'ByteString' values.
 --
 module Data.ByteString.Base16.Lens
 ( -- * Prisms
   _Hex
 , _Base16
+  -- * Isos
+, _Base16Lenient
   -- * Patterns
 , pattern Hex
 , pattern Base16
+, pattern Base16Lenient
 ) where
 
 
@@ -40,7 +43,7 @@
 -- -------------------------------------------------------------------------- --
 -- Optics
 
--- | A 'Prism'' into the Base16 encoding of a 'ByteString' value
+-- | A 'Prism'' into the Base16 encoding of a 'ByteString' value.
 --
 -- >>> _Base16 # "Sun"
 -- "53756e"
@@ -69,6 +72,19 @@
     Right a -> Just a
 {-# INLINE _Hex #-}
 
+-- | A 'Iso'' into the Base16 encoding of a leniently decoded
+-- 'ByteString' value.
+--
+-- >>> _Base16Lenient # "Sun"
+-- "53756e"
+--
+-- >>> "53756e" ^. _Base16Lenient
+-- "Sun"
+--
+_Base16Lenient :: Iso' ByteString ByteString
+_Base16Lenient = iso B16.decodeBase16Lenient B16.encodeBase16'
+{-# INLINE _Base16Lenient #-}
+
 -- -------------------------------------------------------------------------- --
 -- Patterns
 
@@ -83,3 +99,10 @@
 pattern Base16 :: ByteString -> ByteString
 pattern Base16 a <- (preview _Base16 -> Just a) where
     Base16 a = _Base16 # a
+
+-- | Bidirectional pattern synonym for leniently decoded,
+-- Base16-encoded 'ByteString' values.
+--
+pattern Base16Lenient :: ByteString -> ByteString
+pattern Base16Lenient a <- (view (from _Base16Lenient) -> a) where
+    Base16Lenient a = view _Base16 a
diff --git a/src/Data/ByteString/Lazy/Base16/Lens.hs b/src/Data/ByteString/Lazy/Base16/Lens.hs
--- a/src/Data/ByteString/Lazy/Base16/Lens.hs
+++ b/src/Data/ByteString/Lazy/Base16/Lens.hs
@@ -9,16 +9,19 @@
 -- Stability    : Experimental
 -- Portability  : non-portable
 --
--- This module contains 'Prism''s for Base16-encoding and
+-- This module contains 'Prism''s and 'Iso''s for Base16-encoding and
 -- decoding lazy 'ByteString' values.
 --
 module Data.ByteString.Lazy.Base16.Lens
 ( -- * Prisms
   _Hex
 , _Base16
+  -- * Isos
+, _Base16Lenient
   -- * Patterns
 , pattern Hex
 , pattern Base16
+, pattern Base16Lenient
 ) where
 
 
@@ -40,7 +43,7 @@
 -- -------------------------------------------------------------------------- --
 -- Optics
 
--- | A 'Prism'' into the Base16 encoding of a 'ByteString' value
+-- | A 'Prism'' into the Base16 encoding of a 'ByteString' value.
 --
 -- >>> _Base16 # "Sun"
 -- "53756e"
@@ -69,6 +72,18 @@
     Right a -> Just a
 {-# INLINE _Hex #-}
 
+-- | A 'Iso'' into the Base16 encoding of a leniently decoded 'ByteString' value.
+--
+-- >>> _Base16Lenient # "Sun"
+-- "53756e"
+--
+-- >>> "53756e" ^. _Base16
+-- "Sun"
+--
+_Base16Lenient :: Iso' ByteString ByteString
+_Base16Lenient = iso B16L.decodeBase16Lenient B16L.encodeBase16'
+{-# INLINE _Base16Lenient #-}
+
 -- -------------------------------------------------------------------------- --
 -- Patterns
 
@@ -83,3 +98,9 @@
 pattern Base16 :: ByteString -> ByteString
 pattern Base16 a <- (preview _Base16 -> Just a) where
     Base16 a = _Base16 # a
+
+-- | Bidirectional pattern synonym for Base16-encoded 'ByteString' values.
+--
+pattern Base16Lenient :: ByteString -> ByteString
+pattern Base16Lenient a <- (view (from _Base16Lenient) -> a) where
+    Base16Lenient a = view _Base16 a
diff --git a/src/Data/Text/Encoding/Base16/Lens.hs b/src/Data/Text/Encoding/Base16/Lens.hs
--- a/src/Data/Text/Encoding/Base16/Lens.hs
+++ b/src/Data/Text/Encoding/Base16/Lens.hs
@@ -9,16 +9,18 @@
 -- Stability    : Experimental
 -- Portability  : non-portable
 --
--- This module contains 'Prism's Base16-encoding and
+-- This module contains 'Prism''s and 'Iso''s Base16-encoding and
 -- decoding 'Text' values.
 --
 module Data.Text.Encoding.Base16.Lens
 ( -- * Prisms
   _Hex
 , _Base16
+, _Base16Lenient
   -- * Patterns
 , pattern Hex
 , pattern Base16
+, pattern Base16Lenient
 ) where
 
 import Control.Lens
@@ -38,6 +40,20 @@
 -- -------------------------------------------------------------------------- --
 -- Optics
 
+-- | A 'Prism'' into the Base16 encoding of a 'Text' value
+--
+-- >>> _Base16 # "Sun"
+-- "53756e"
+--
+-- >>> "53756e" ^? _Base16
+-- Just "Sun"
+--
+_Base16 :: Prism' Text Text
+_Base16 = prism' B16T.encodeBase16 $ \s -> case B16T.decodeBase16 s of
+    Left _ -> Nothing
+    Right a -> Just a
+{-# INLINE _Base16 #-}
+
 -- | A 'Prism'' into the Base16 encoding of a 'Text' value. This is an
 -- alias for '_Base16'.
 --
@@ -53,19 +69,17 @@
     Right a -> Just a
 {-# INLINE _Hex #-}
 
--- | A 'Prism'' into the Base16 encoding of a 'Text' value
+-- | A 'Iso'' into the Base16 encoding of a 'ByteString' value
 --
--- >>> _Base16 # "Sun"
+-- >>> _Base16Lenient # "Sun"
 -- "53756e"
 --
--- >>> "53756e" ^? _Base16
--- Just "Sun"
+-- >>> "53756e" ^. _Base16Lenient
+-- "Sun"
 --
-_Base16 :: Prism' Text Text
-_Base16 = prism' B16T.encodeBase16 $ \s -> case B16T.decodeBase16 s of
-    Left _ -> Nothing
-    Right a -> Just a
-{-# INLINE _Base16 #-}
+_Base16Lenient :: Iso' Text Text
+_Base16Lenient = iso B16T.decodeBase16Lenient B16T.encodeBase16
+{-# INLINE _Base16Lenient #-}
 
 -- -------------------------------------------------------------------------- --
 -- Patterns
@@ -81,3 +95,10 @@
 pattern Base16 :: Text -> Text
 pattern Base16 a <- (preview _Base16 -> Just a) where
     Base16 a = _Base16 # a
+
+-- | Bidirectional pattern synonym for leniently decoded,
+-- Base16-encoded 'ByteString' values.
+--
+pattern Base16Lenient :: Text -> Text
+pattern Base16Lenient a <- (view (from _Base16Lenient) -> a) where
+    Base16Lenient a = view _Base16 a
diff --git a/src/Data/Text/Lazy/Encoding/Base16/Lens.hs b/src/Data/Text/Lazy/Encoding/Base16/Lens.hs
--- a/src/Data/Text/Lazy/Encoding/Base16/Lens.hs
+++ b/src/Data/Text/Lazy/Encoding/Base16/Lens.hs
@@ -9,16 +9,19 @@
 -- Stability    : Experimental
 -- Portability  : non-portable
 --
--- This module contains 'Prism's Base16-encoding and
+-- This module contains 'Prism''s and 'Iso''s Base16-encoding and
 -- decoding lazy 'Text' values.
 --
 module Data.Text.Lazy.Encoding.Base16.Lens
 ( -- * Prisms
-  _Hex
-, _Base16
+  _Base16
+, _Hex
+  -- * Isos
+, _Base16Lenient
   -- * Patterns
 , pattern Hex
 , pattern Base16
+, pattern Base16Lenient
 ) where
 
 import Control.Lens
@@ -38,7 +41,7 @@
 -- -------------------------------------------------------------------------- --
 -- Optics
 
--- | A 'Prism'' into the Base16 encoding of a lazy 'Text' value
+-- | A 'Prism'' into the Base16 encoding of a lazy 'Text' value.
 --
 -- >>> _Base16 # "Sun"
 -- "53756e"
@@ -53,7 +56,7 @@
 {-# INLINE _Base16 #-}
 
 -- | A 'Prism'' into the Base16 encoding of a lazy 'Text' value. This
--- function is an alias for '_Base16'
+-- function is an alias for '_Base16'.
 --
 -- >>> _Hex # "Sun"
 -- "53756e"
@@ -67,6 +70,19 @@
     Right a -> Just a
 {-# INLINE _Hex #-}
 
+-- | A 'Iso'' into the Base16 encoding of a leniently decoded
+-- 'ByteString' value.
+--
+-- >>> _Base16Lenient # "Sun"
+-- "53756e"
+--
+-- >>> "53756e" ^. _Base16Lenient
+-- "Sun"
+--
+_Base16Lenient :: Iso' Text Text
+_Base16Lenient = iso B16TL.decodeBase16Lenient B16TL.encodeBase16
+{-# INLINE _Base16Lenient #-}
+
 -- -------------------------------------------------------------------------- --
 -- Patterns
 
@@ -81,3 +97,10 @@
 pattern Base16 :: Text -> Text
 pattern Base16 a <- (preview _Base16 -> Just a) where
     Base16 a = _Base16 # a
+
+-- | Bidirectional pattern synonym for leniently decoded,
+-- Base16-encoded 'ByteString' values.
+--
+pattern Base16Lenient :: Text -> Text
+pattern Base16Lenient a <- (view (from _Base16Lenient) -> a) where
+    Base16Lenient a = view _Base16 a