diff --git a/Dockerfile b/Dockerfile
index 5f898fc..bfc7a30 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -112,8 +112,8 @@ RUN chmod +x /usr/bin/update_ssmtp.sh
 RUN /usr/bin/update_ssmtp.sh
 
 # Open Atrium
-ENV OATRIUM_DOWNLOAD_URL https://ftp.drupal.org/files/projects/openatrium-7.x-2.643-core.tar.gz
-ENV OATRIUM_DOWNLOAD_SHA256 cb80a8362890aa8ce2b0ca4b8bf7f1400e21ab69adc6595da51379bae6d8542c
+ENV OATRIUM_DOWNLOAD_URL https://ftp.drupal.org/files/projects/openatrium-7.x-2.644-core.tar.gz
+ENV OATRIUM_DOWNLOAD_SHA256 8373f6f186445705974f3fe00929d409f246d9f1ab6e101bfd22df03231fade6
 RUN rm -f /var/www/html/*
 RUN curl -fsS "$OATRIUM_DOWNLOAD_URL" -o oatrium.tar.gz \
   && echo "$OATRIUM_DOWNLOAD_SHA256 oatrium.tar.gz" | sha256sum -c - \
diff --git a/README.md b/README.md
index efb2f59..516f5e9 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 This repo contains a working repository for Phase2's OpenAtrium, based on the Drupal CMS.
 
-## OpenAtrium - ver. 2.643
+## OpenAtrium - ver. 2.644
 
 OpenAtrium is a pretty rad Drupal distribution, supported by Phase2, that makes it pretty easy to set up very flexible intranets/community sites with out-of-the-box support for maintaining a hierarchy of 'spaces' that can each be customized with calendars, tasks, discussion boards, and file sharing. User groups, teams, permissions, etc. all well supported. 
 
@@ -177,7 +177,7 @@ Last Note: 99% of this image is relevant to any Drupal 7 distribution, so if you
 
 You'll want to change this line: 
 
-`RUN curl https://ftp.drupal.org/files/projects/openatrium-7.x-2.643-core.tar.gz | tar xz -C /var/www/html --strip-components=1 `
+`RUN curl https://ftp.drupal.org/files/projects/openatrium-7.x-2.644-core.tar.gz | tar xz -C /var/www/html --strip-components=1 `
 
 to