diff --git a/Text/Pandoc/Walk.hs b/Text/Pandoc/Walk.hs
--- a/Text/Pandoc/Walk.hs
+++ b/Text/Pandoc/Walk.hs
@@ -141,30 +141,38 @@
   walkM f = T.traverse (walkInlineM f) >=> f
   query f inlns = f inlns <> mconcat (map (queryInline f) inlns)
 
+instance Walkable [Inline] Inline where
+  walkM f = walkInlineM f
+  query f = queryInline f
+
 instance Walkable Inline Block where
-  walkM f x = walkBlockM f x
-  query f x = queryBlock f x
+  walkM f = walkBlockM f
+  query f = queryBlock f
 
 instance Walkable [Inline] Block where
-  walkM f x = walkBlockM f x
-  query f x = queryBlock f x
+  walkM f = walkBlockM f
+  query f = queryBlock f
 
 instance Walkable Block Block where
   walkM f x = walkBlockM f x >>= f
   query f x = f x <> queryBlock f x
 
+instance Walkable [Block] Block where
+  walkM f = walkBlockM f
+  query f = queryBlock f
+
 instance OVERLAPS
          Walkable [Block] [Block] where
   walkM f = T.traverse (walkBlockM f) >=> f
   query f blks = f blks <> mconcat (map (queryBlock f) blks)
 
 instance Walkable Block Inline where
-  walkM f x = walkInlineM f x
-  query f x = queryInline f x
+  walkM f = walkInlineM f
+  query f = queryInline f
 
 instance Walkable [Block] Inline where
-  walkM f x = walkInlineM f x
-  query f x = queryInline f x
+  walkM f = walkInlineM f
+  query f = queryInline f
 
 instance Walkable Block Pandoc where
   walkM = walkPandocM
diff --git a/changelog b/changelog
--- a/changelog
+++ b/changelog
@@ -1,3 +1,7 @@
+[1.17.3]
+
+  * Added Walkable instances for `[Inline] Inline` and `[Block] Block`.
+
 [1.17.2]
 
   * Provide default implementation for walk (Albert Krewinkel).
diff --git a/pandoc-types.cabal b/pandoc-types.cabal
--- a/pandoc-types.cabal
+++ b/pandoc-types.cabal
@@ -1,5 +1,5 @@
 Name:                pandoc-types
-Version:             1.17.2
+Version:             1.17.3
 Synopsis:            Types for representing a structured document
 Description:         @Text.Pandoc.Definition@ defines the 'Pandoc' data
                      structure, which is used by pandoc to represent