diff --git a/app/Niv.hs b/app/Niv.hs
index 42955b7..7b155c0 100644
--- a/app/Niv.hs
+++ b/app/Niv.hs
@@ -545,7 +545,9 @@ decodeFileStrict = fmap Aeson.decodeStrict . B.readFile
 
 -- | Efficiently serialize a JSON value as a lazy 'L.ByteString' and write it to a file.
 encodeFile :: (ToJSON a) => FilePath -> a -> IO ()
-encodeFile fp = L.writeFile fp . AesonPretty.encodePretty
+encodeFile fp = L.writeFile fp . AesonPretty.encodePretty' config
+  where
+    config =  AesonPretty.defConfig { AesonPretty.confTrailingNewline = True }
 
 --- HashMap
 
diff --git a/site/niv.svg b/site/niv.svg
index 7f5b3be..0816c11 100644
--- a/site/niv.svg
+++ b/site/niv.svg
@@ -1,10 +1,10 @@
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="abe908267c720ac70c8da2ce7b5a4b00" baseProfile="full" viewBox="0 0 703 523" width="703" version="1.1">
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="3390b63b37340da6e79414afb40bfa45" baseProfile="full" viewBox="0 0 703 523" width="703" version="1.1">
     <defs>
         <termtosvg:template_settings xmlns:termtosvg="https://github.com/nbedos/termtosvg">
             <termtosvg:screen_geometry columns="82" rows="26"/>
         </termtosvg:template_settings>
         <style type="text/css" id="generated-style"><![CDATA[:root {
-            --animation-duration: 5500ms;
+            --animation-duration: 7000ms;
         }
 
     #screen {
@@ -44,5 +44,5 @@
     <circle cx="44" cy="23" r="7" class="color3"/>
     <circle cx="64" cy="23" r="7" class="color2"/>
     <svg id="screen" width="656" x="23" y="50" viewBox="0 0 656 442" preserveAspectRatio="xMidYMin meet">
-        <rect class="background" height="100%" width="100%" x="0" y="0"/><g display="none"><rect class="foreground" height="17" width="8" x="0" y="85"/><use y="85" xlink:href="#g1"/><animate attributeName="display" begin="0ms; anim_last.end" dur="1500ms" from="inline" to="inline"/></g><g display="none"><rect class="foreground" height="17" width="8" x="0" y="187"/><use y="187" xlink:href="#g1"/><animate attributeName="display" begin="1500ms; anim_last.end+1500ms" dur="1500ms" from="inline" to="inline"/></g><g display="none"><rect class="foreground" height="17" width="8" x="0" y="306"/><use y="306" xlink:href="#g1"/><animate attributeName="display" begin="3000ms; anim_last.end+3000ms" dur="1500ms" from="inline" to="inline"/></g><g display="none"><use y="0" xlink:href="#g2"/><use y="17" xlink:href="#g3"/><use y="34" xlink:href="#g4"/><use y="51" xlink:href="#g5"/><use y="68" xlink:href="#g6"/><animate attributeName="display" begin="0ms; anim_last.end" dur="5500ms" from="inline" to="inline"/></g><g display="none"><use y="85" xlink:href="#g7"/><use y="102" xlink:href="#g8"/><use y="119" xlink:href="#g9"/><use y="136" xlink:href="#g10"/><use y="153" xlink:href="#g11"/><use y="170" xlink:href="#g6"/><animate attributeName="display" begin="1500ms; anim_last.end+1500ms" dur="4000ms" from="inline" to="inline"/></g><g display="none"><use y="272" xlink:href="#g12"/><use y="289" xlink:href="#g6"/><use y="187" xlink:href="#g7"/><use y="204" xlink:href="#g13"/><use y="221" xlink:href="#g14"/><use y="238" xlink:href="#g10"/><animate attributeName="display" begin="3000ms; anim_last.end+3000ms" dur="2500ms" from="inline" to="inline"/></g><g display="none"><use y="306" xlink:href="#g7"/><use y="323" xlink:href="#g15"/><use y="340" xlink:href="#g16"/><use y="357" xlink:href="#g10"/><rect class="foreground" height="17" width="8" x="0" y="374"/><use y="374" xlink:href="#g1"/><animate attributeName="display" begin="4500ms; anim_last.end+4500ms" dur="1000ms" from="inline" to="inline" id="anim_last"/></g><defs><g id="g1"><text class="background" textLength="8" x="0"> </text></g><g id="g2"><text class="foreground" textLength="80" x="0">$ niv init</text></g><g id="g3"><text class="foreground" textLength="192" x="0">Creating nix/sources.nix</text></g><g id="g4"><text class="foreground" textLength="200" x="0">Creating nix/sources.json</text></g><g id="g5"><text class="foreground" textLength="152" x="0">Importing 'niv' ...</text></g><g id="g6"><text class="foreground" textLength="160" x="0">Reading sources file</text></g><g id="g7"><text class="foreground" textLength="96" x="0">unpacking...</text></g><g id="g8"><text class="foreground" textLength="656" x="0">path is '/nix/store/0kvlwg7z8x4qw2n8zakmplb0vw5r1hs4-cbadb8355ca348991d2d1ec9c7dfd</text></g><g id="g9"><text class="foreground" textLength="152" x="0">b30c77c35d1.tar.gz'</text></g><g id="g10"><text class="foreground" textLength="192" x="0">Writing new sources file</text></g><g id="g11"><text class="foreground" textLength="184" x="0">Importing 'nixpkgs' ...</text></g><g id="g12"><text class="foreground" textLength="168" x="0">$ niv add stedolan/jq</text></g><g id="g13"><text class="foreground" textLength="656" x="0">path is '/nix/store/wbq0p56kd31j6zznjlaxahm8815gqcwk-46d3867a08a9206685e2b6a8e19f5</text></g><g id="g14"><text class="foreground" textLength="152" x="0">ad9f6ab4b39.tar.gz'</text></g><g id="g15"><text class="foreground" textLength="656" x="0">path is '/nix/store/yjz2v8kfk2jkzc0w7lh43hfmcafpqs33-ad9fc9f559e78a764aac20f669f23</text></g><g id="g16"><text class="foreground" textLength="152" x="0">cdd020cd943.tar.gz'</text></g></defs></svg>
+        <rect class="background" height="100%" width="100%" x="0" y="0"/><g display="none"><rect class="foreground" height="17" width="8" x="0" y="85"/><use y="85" xlink:href="#g1"/><animate attributeName="display" begin="0ms; anim_last.end" dur="1500ms" from="inline" to="inline"/></g><g display="none"><rect class="foreground" height="17" width="8" x="0" y="187"/><use y="187" xlink:href="#g1"/><animate attributeName="display" begin="1500ms; anim_last.end+1500ms" dur="1500ms" from="inline" to="inline"/></g><g display="none"><rect class="foreground" height="17" width="8" x="0" y="204"/><use y="204" xlink:href="#g1"/><animate attributeName="display" begin="3000ms; anim_last.end+3000ms" dur="1500ms" from="inline" to="inline"/></g><g display="none"><rect class="foreground" height="17" width="8" x="0" y="306"/><use y="306" xlink:href="#g1"/><animate attributeName="display" begin="4500ms; anim_last.end+4500ms" dur="1500ms" from="inline" to="inline"/></g><g display="none"><use y="0" xlink:href="#g2"/><use y="17" xlink:href="#g3"/><use y="34" xlink:href="#g4"/><use y="51" xlink:href="#g5"/><use y="68" xlink:href="#g6"/><animate attributeName="display" begin="0ms; anim_last.end" dur="7000ms" from="inline" to="inline"/></g><g display="none"><use y="85" xlink:href="#g7"/><use y="102" xlink:href="#g8"/><use y="119" xlink:href="#g9"/><use y="136" xlink:href="#g10"/><use y="153" xlink:href="#g11"/><use y="170" xlink:href="#g6"/><animate attributeName="display" begin="1500ms; anim_last.end+1500ms" dur="5500ms" from="inline" to="inline"/></g><g display="none"><use y="187" xlink:href="#g7"/><animate attributeName="display" begin="3000ms; anim_last.end+3000ms" dur="4000ms" from="inline" to="inline"/></g><g display="none"><use y="272" xlink:href="#g12"/><use y="289" xlink:href="#g6"/><use y="204" xlink:href="#g13"/><use y="221" xlink:href="#g14"/><use y="238" xlink:href="#g10"/><animate attributeName="display" begin="4500ms; anim_last.end+4500ms" dur="2500ms" from="inline" to="inline"/></g><g display="none"><use y="306" xlink:href="#g7"/><use y="323" xlink:href="#g15"/><use y="340" xlink:href="#g16"/><use y="357" xlink:href="#g10"/><rect class="foreground" height="17" width="8" x="0" y="374"/><use y="374" xlink:href="#g1"/><animate attributeName="display" begin="6000ms; anim_last.end+6000ms" dur="1000ms" from="inline" to="inline" id="anim_last"/></g><defs><g id="g1"><text class="background" textLength="8" x="0"> </text></g><g id="g2"><text class="foreground" textLength="80" x="0">$ niv init</text></g><g id="g3"><text class="foreground" textLength="192" x="0">Creating nix/sources.nix</text></g><g id="g4"><text class="foreground" textLength="200" x="0">Creating nix/sources.json</text></g><g id="g5"><text class="foreground" textLength="152" x="0">Importing 'niv' ...</text></g><g id="g6"><text class="foreground" textLength="160" x="0">Reading sources file</text></g><g id="g7"><text class="foreground" textLength="96" x="0">unpacking...</text></g><g id="g8"><text class="foreground" textLength="656" x="0">path is '/nix/store/pj0kr4086wciqn2kwl31sjkbnn8nm2s0-9ef6a381fc157f249f543f1c906c9</text></g><g id="g9"><text class="foreground" textLength="152" x="0">3eb12d1a3a0.tar.gz'</text></g><g id="g10"><text class="foreground" textLength="192" x="0">Writing new sources file</text></g><g id="g11"><text class="foreground" textLength="184" x="0">Importing 'nixpkgs' ...</text></g><g id="g12"><text class="foreground" textLength="168" x="0">$ niv add stedolan/jq</text></g><g id="g13"><text class="foreground" textLength="656" x="0">path is '/nix/store/v7kg3bb5qw70i2p689jz85l4kwrb11lf-571b40d3f50466d3e91c1e609d372</text></g><g id="g14"><text class="foreground" textLength="152" x="0">de96d782793.tar.gz'</text></g><g id="g15"><text class="foreground" textLength="656" x="0">path is '/nix/store/yjz2v8kfk2jkzc0w7lh43hfmcafpqs33-ad9fc9f559e78a764aac20f669f23</text></g><g id="g16"><text class="foreground" textLength="152" x="0">cdd020cd943.tar.gz'</text></g></defs></svg>
 </svg>
\ No newline at end of file
diff --git a/tests/expected/niv-init.json b/tests/expected/niv-init.json
index f0299cc..9bed571 100644
--- a/tests/expected/niv-init.json
+++ b/tests/expected/niv-init.json
@@ -22,4 +22,4 @@
         "description": "Easy dependency management for Nix projects",
         "rev": "a489b65a5c3a29983701069d1ce395b23d9bde64"
     }
-}
\ No newline at end of file
+}