diff --git a/Dockerfile b/Dockerfile
index 2cb28b09..e749edcd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@ FROM node:16.20.1-alpine as base
 WORKDIR /app
 RUN apk --no-cache update && \
     apk --no-cache upgrade && \
-    apk add --no-cache --virtual .build-dependencies python3 make g++ && \
+    apk add --no-cache --virtual .build-dependencies python3 make g++ git && \
     mkdir -p node_modules && chown -R node:node .
 
 
diff --git a/lib/handlers/userDataHandler.js b/lib/handlers/userDataHandler.js
index 173d35de..5c86f1a9 100644
--- a/lib/handlers/userDataHandler.js
+++ b/lib/handlers/userDataHandler.js
@@ -76,7 +76,7 @@ export default function userDataHandler() {
           .pipe(res);
       } else {
         res.attachment('TidepoolExport.xlsx');
-        writeStream = dataTools.xlsxStreamWriter(res, processorConfig);
+        writeStream = await dataTools.xlsxStreamWriter(res, processorConfig);
 
         dataResponse.data
           .pipe(dataTools.jsonParser())
diff --git a/package.json b/package.json
index f06d92f3..dfb4de08 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   "private": false,
   "dependencies": {
     "@godaddy/terminus": "4.12.1",
-    "@tidepool/data-tools": "2.4.1",
+    "@tidepool/data-tools": "https://github.com/tidepool-org/node-data-tools.git#tk/use-exceljs-fork",
     "@tidepool/viz": "1.37.0",
     "axios": "1.4.0",
     "blob-stream": "0.1.3",
diff --git a/yarn.lock b/yarn.lock
index 61e428b5..b6e6877f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -416,16 +416,15 @@
   dependencies:
     tslib "^2.4.0"
 
-"@tidepool/data-tools@2.4.1":
+"@tidepool/data-tools@https://github.com/tidepool-org/node-data-tools.git#tk/use-exceljs-fork":
   version "2.4.1"
-  resolved "https://registry.yarnpkg.com/@tidepool/data-tools/-/data-tools-2.4.1.tgz#ce0d6e4f8bebf80e5e3193a882b152c9069e3050"
-  integrity sha512-k5IxoeR3cLnmq6LoTGlG7Lhel6QQlxYWp0woqh9Dai8P9O7CKp6pTbArDvo2UHqNRoxl7Esvz020kw3i9rd9ow==
+  resolved "https://github.com/tidepool-org/node-data-tools.git#de315584e7319696077f71fa1824701cb4be23ec"
   dependencies:
+    "@zlooun/exceljs" "1.0.3"
     JSONStream "1.3.5"
     commander "4.1.1"
     csv-string "3.1.7"
     event-stream "3.3.4"
-    exceljs "4.3.0"
     flat "5.0.0"
     lodash "4.17.15"
     mkdirp "1.0.3"
@@ -526,6 +525,21 @@
   resolved "https://registry.yarnpkg.com/@types/parse-json/-/parse-json-4.0.0.tgz#2f8bb441434d163b35fb8ffdccd7138927ffb8c0"
   integrity sha512-//oorEZjL6sbPcKUaCdIGlIUeH26mgzimjBB77G6XRgnDl/L5wOnpyBGRe/Mmf5CVW3PwEBE1NjiMZ/ssFh4wA==
 
+"@zlooun/exceljs@1.0.3":
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/@zlooun/exceljs/-/exceljs-1.0.3.tgz#5ce9859304f6082f2482a8fa2dd03bb6b37d22f6"
+  integrity sha512-0bOI9DY9D/ybm38X05t+MvQAw26QxWN4xTmlZ6ritl9mfG0jec2Xh71HsZFvzghaYwlpIRpZJ0hTYoElDvKAvQ==
+  dependencies:
+    archiver "^5.0.0"
+    dayjs "^1.8.34"
+    fast-csv "^4.3.1"
+    jszip "^3.7.1"
+    readable-stream "^3.6.0"
+    saxes "^5.0.1"
+    tmp "^0.2.0"
+    unzipper "^0.10.11"
+    uuid "^8.3.0"
+
 JSONStream@1.3.5:
   version "1.3.5"
   resolved "https://registry.yarnpkg.com/JSONStream/-/JSONStream-1.3.5.tgz#3208c1f08d3a4d99261ab64f92302bc15e111ca0"
@@ -2017,21 +2031,6 @@ event-stream@3.3.4:
     stream-combiner "~0.0.4"
     through "~2.3.1"
 
-exceljs@4.3.0:
-  version "4.3.0"
-  resolved "https://registry.yarnpkg.com/exceljs/-/exceljs-4.3.0.tgz#939bc0d4c59c200acadb7051be34d25c109853c4"
-  integrity sha512-hTAeo5b5TPvf8Z02I2sKIT4kSfCnOO2bCxYX8ABqODCdAjppI3gI9VYiGCQQYVcBaBSKlFDMKlAQRqC+kV9O8w==
-  dependencies:
-    archiver "^5.0.0"
-    dayjs "^1.8.34"
-    fast-csv "^4.3.1"
-    jszip "^3.5.0"
-    readable-stream "^3.6.0"
-    saxes "^5.0.1"
-    tmp "^0.2.0"
-    unzipper "^0.10.11"
-    uuid "^8.3.0"
-
 express@4.18.2:
   version "4.18.2"
   resolved "https://registry.yarnpkg.com/express/-/express-4.18.2.tgz#3fabe08296e930c796c19e3c516979386ba9fd59"
@@ -2892,7 +2891,7 @@ jsonparse@^1.2.0:
     object.assign "^4.1.4"
     object.values "^1.1.6"
 
-jszip@^3.5.0:
+jszip@^3.7.1:
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/jszip/-/jszip-3.10.1.tgz#34aee70eb18ea1faec2f589208a157d1feb091c2"
   integrity sha512-xXDvecyTpGLrqFrvkrUSoxxfJI5AH7U8zxxtVclpsUtMCq4JQ290LY8AW5c7Ggnr/Y/oK+bQMbqK2qmtk3pN4g==