diff --git a/abi_used_libs b/abi_used_libs
--- a/abi_used_libs
+++ b/abi_used_libs
@@ -13,6 +13,7 @@
 libXtst.so.6
 libasound.so.2
 libatk-1.0.so.0
+libatk-bridge-2.0.so.0
 libc.so.6
 libcairo.so.2
 libcrypto.so.1.0.0
@@ -21,14 +22,11 @@
 libdbus-1.so.3
 libdl.so.2
 libexpat.so.1
-libfontconfig.so.1
 libgcc_s.so.1
-libgconf-2.so.4
 libgdk-3.so.0
 libgdk_pixbuf-2.0.so.0
 libgio-2.0.so.0
 libglib-2.0.so.0
-libgmodule-2.0.so.0
 libgobject-2.0.so.0
 libgssapi_krb5.so.2
 libgtk-3.so.0
@@ -43,5 +41,6 @@
 libsecret-1.so.0
 libsmime3.so
 libstdc++.so.6
+libuuid.so.1
 libxcb.so.1
 libxkbfile.so.1
diff --git a/package.yml b/package.yml
--- a/package.yml
+++ b/package.yml
@@ -1,8 +1,8 @@
 name       : mailspring
-version    : 1.5.3
-release    : 17
+version    : 1.5.5
+release    : 18
 source     :
-    - https://github.com/Foundry376/Mailspring/releases/download/1.5.3/mailspring-1.5.3-amd64.deb : 472fd34c41e77cdcf48772b93d5272f615710dec042b099faa7cdf6ffd8bfaa4
+    - https://github.com/Foundry376/Mailspring/releases/download/1.5.5/mailspring-1.5.5-amd64.deb : 60786914dcbac0a5089624b3f1059163df4c303ba1aba4036c4349bc777205ba
 license    :
     - GPL-3.0-or-later
     - Distributable # mailsync
diff --git a/pspec_x86_64.xml b/pspec_x86_64.xml
--- a/pspec_x86_64.xml
+++ b/pspec_x86_64.xml
@@ -32,12 +32,13 @@
             <Path fileType="data">/usr/share/lintian/overrides/mailspring</Path>
             <Path fileType="data">/usr/share/mailspring/LICENSE</Path>
             <Path fileType="data">/usr/share/mailspring/LICENSES.chromium.html</Path>
-            <Path fileType="data">/usr/share/mailspring/blink_image_resources_200_percent.pak</Path>
-            <Path fileType="data">/usr/share/mailspring/content_resources_200_percent.pak</Path>
-            <Path fileType="data">/usr/share/mailspring/content_shell.pak</Path>
+            <Path fileType="data">/usr/share/mailspring/chrome_100_percent.pak</Path>
+            <Path fileType="data">/usr/share/mailspring/chrome_200_percent.pak</Path>
             <Path fileType="data">/usr/share/mailspring/icudtl.dat</Path>
+            <Path fileType="data">/usr/share/mailspring/libEGL.so</Path>
+            <Path fileType="data">/usr/share/mailspring/libGLESv2.so</Path>
+            <Path fileType="data">/usr/share/mailspring/libVkICD_mock_icd.so</Path>
             <Path fileType="data">/usr/share/mailspring/libffmpeg.so</Path>
-            <Path fileType="data">/usr/share/mailspring/libnode.so</Path>
             <Path fileType="data">/usr/share/mailspring/locales/am.pak</Path>
             <Path fileType="data">/usr/share/mailspring/locales/ar.pak</Path>
             <Path fileType="data">/usr/share/mailspring/locales/bg.pak</Path>
@@ -53,7 +54,6 @@
             <Path fileType="data">/usr/share/mailspring/locales/es.pak</Path>
             <Path fileType="data">/usr/share/mailspring/locales/et.pak</Path>
             <Path fileType="data">/usr/share/mailspring/locales/fa.pak</Path>
-            <Path fileType="data">/usr/share/mailspring/locales/fake-bidi.pak</Path>
             <Path fileType="data">/usr/share/mailspring/locales/fi.pak</Path>
             <Path fileType="data">/usr/share/mailspring/locales/fil.pak</Path>
             <Path fileType="data">/usr/share/mailspring/locales/fr.pak</Path>
@@ -94,7 +94,7 @@
             <Path fileType="data">/usr/share/mailspring/locales/zh-TW.pak</Path>
             <Path fileType="data">/usr/share/mailspring/mailspring</Path>
             <Path fileType="data">/usr/share/mailspring/natives_blob.bin</Path>
-            <Path fileType="data">/usr/share/mailspring/pdf_viewer_resources.pak</Path>
+            <Path fileType="data">/usr/share/mailspring/resources.pak</Path>
             <Path fileType="data">/usr/share/mailspring/resources/app.asar</Path>
             <Path fileType="data">/usr/share/mailspring/resources/app.asar.unpacked/libanonymous.so</Path>
             <Path fileType="data">/usr/share/mailspring/resources/app.asar.unpacked/libanonymous.so.2</Path>
@@ -195,6 +195,7 @@
             <Path fileType="data">/usr/share/mailspring/resources/app.asar.unpacked/node_modules/better-sqlite3/build/Debug/better_sqlite3.node</Path>
             <Path fileType="data">/usr/share/mailspring/resources/app.asar.unpacked/node_modules/better-sqlite3/build/Debug/obj.target/better_sqlite3.node</Path>
             <Path fileType="data">/usr/share/mailspring/resources/app.asar.unpacked/node_modules/emoji-data/vendor/emoji-data/emoji.json</Path>
+            <Path fileType="data">/usr/share/mailspring/resources/app.asar.unpacked/node_modules/jszip/vendor/FileSaver.js</Path>
             <Path fileType="data">/usr/share/mailspring/resources/app.asar.unpacked/node_modules/keyboard-layout/build/Release/keyboard-layout-manager.node</Path>
             <Path fileType="data">/usr/share/mailspring/resources/app.asar.unpacked/node_modules/keyboard-layout/build/Release/obj.target/keyboard-layout-manager.node</Path>
             <Path fileType="data">/usr/share/mailspring/resources/app.asar.unpacked/node_modules/keytar/build/Release/keytar.node</Path>
@@ -214,9 +215,10 @@
             <Path fileType="data">/usr/share/mailspring/resources/app.asar.unpacked/node_modules/windows-shortcuts/package.json</Path>
             <Path fileType="data">/usr/share/mailspring/resources/electron.asar</Path>
             <Path fileType="data">/usr/share/mailspring/snapshot_blob.bin</Path>
-            <Path fileType="data">/usr/share/mailspring/ui_resources_200_percent.pak</Path>
+            <Path fileType="data">/usr/share/mailspring/swiftshader/libEGL.so</Path>
+            <Path fileType="data">/usr/share/mailspring/swiftshader/libGLESv2.so</Path>
+            <Path fileType="data">/usr/share/mailspring/v8_context_snapshot.bin</Path>
             <Path fileType="data">/usr/share/mailspring/version</Path>
-            <Path fileType="data">/usr/share/mailspring/views_resources_200_percent.pak</Path>
             <Path fileType="data">/usr/share/pixmaps/mailspring.png</Path>
         </Files>
         <Replaces>
@@ -224,12 +226,12 @@
         </Replaces>
     </Package>
     <History>
-        <Update release="17">
-            <Date>2018-11-29</Date>
-            <Version>1.5.3</Version>
+        <Update release="18">
+            <Date>2019-01-06</Date>
+            <Version>1.5.5</Version>
             <Comment>Packaging update</Comment>
             <Name>Alec Scott</Name>
             <Email>alecbcs@gmail.com</Email>
         </Update>
     </History>
 </PISI>
\ No newline at end of file