diff --git a/shard.yml b/shard.yml
index f2f7afa..a7750d0 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,10 +1,10 @@
 name: crystar
-version: 0.1.5
+version: 0.1.6
 description: |
   Shard Crystar implements access to tar archives. This shard aims to cover most variations of the format, including those produced by GNU and BSD tar tools.
 authors:
   - Ali Naqvi <syed.alinaqvi@gmail.com>
 
-crystal: 0.34.0
+crystal: 0.35.0
 
 license: MIT
diff --git a/src/crystar.cr b/src/crystar.cr
index dae5534..5c69636 100644
--- a/src/crystar.cr
+++ b/src/crystar.cr
@@ -35,7 +35,7 @@ require "./tar/*"
 # end
 # ```
 module Crystar
-  VERSION = "0.1.5"
+  VERSION = "0.1.6"
 
   # Common Crystar exceptions
   class Error < Exception
diff --git a/src/tar/reader.cr b/src/tar/reader.cr
index ba33785..c62395f 100644
--- a/src/tar/reader.cr
+++ b/src/tar/reader.cr
@@ -369,7 +369,7 @@ module Crystar
       abstract def read(b : Bytes) : Int
       abstract def write_to(w : IO) : Int
 
-      def write(b : Bytes) : Nil
+      def write(b : Bytes) : Int64
         raise Error.new "Crystar Reader: Can't write"
       end
 
diff --git a/src/tar/writer.cr b/src/tar/writer.cr
index d66a5ce..8c11515 100644
--- a/src/tar/writer.cr
+++ b/src/tar/writer.cr
@@ -114,7 +114,7 @@ module Crystar
     # Calling write on special types like LINK, SYMLINK, CHAR,
     # BLOCK, DIR, and FIFO returns (0, ErrWriteTooLong) regardless
     # of what the Header#size claims.
-    def write(b : Bytes) : Nil
+    def write(b : Bytes) : Int64
       raise Error.new("Can't write to closed writer") if @closed
       # begin
       @curr.write(b)
@@ -349,7 +349,7 @@ module Crystar
       def initialize(@io)
       end
 
-      abstract def write(b : Bytes) : Nil
+      abstract def write(b : Bytes) : Int64
       abstract def read_from(r : IO) : Int
 
       def read(b : Bytes)
@@ -367,7 +367,7 @@ module Crystar
         super(@io)
       end
 
-      def write(b : Bytes) : Nil
+      def write(b : Bytes) : Int64
         overwrite = b.size > @nb
         b = b[..@nb] if overwrite
         if b.size > 0
@@ -375,7 +375,7 @@ module Crystar
           @nb -= b.size
         end
         raise ErrWriteTooLong.new "tar: write too long" if overwrite
-        nil
+        b.size.to_i64
       end
 
       def read_from(r : IO) : Int
@@ -396,11 +396,10 @@ module Crystar
         super(@fw)
       end
 
-      def write(b : Bytes) : Nil
+      def write(b : Bytes) : Int64
         overwrite = b.size > logical_remaining
         b = b[...logical_remaining] if overwrite
-
-        b0 = b
+        written = 0i64
         end_pos = @pos + b.size
         too_long = false
         while end_pos > @pos && !too_long
@@ -422,12 +421,12 @@ module Crystar
           end
           b = b[nf..]
           @pos += nf
+          written += nf
           if @pos >= data_end && @sp.size > 1
             @sp = @sp[1..] # Ensure last fragment always remains
           end
         end
 
-        n = b0.size - b.size
         # Not possible; implies bug in validation logic
         raise Error.new("sparse file references non-existent data") if too_long
         if logical_remaining == 0 && physical_remaining > 0
@@ -435,7 +434,7 @@ module Crystar
           raise Error.new("sparse file contains unreferenced data")
         end
         raise IO::EOFError.new if overwrite
-        n
+        written
       end
 
       def read_from(r : IO) : Int