diff --git a/lib/database-upload.js b/lib/database-upload.js
index 3f51505b2..1da6e434f 100644
--- a/lib/database-upload.js
+++ b/lib/database-upload.js
@@ -48,17 +48,18 @@ async function uploadDatabases(repositoryNwo, config, apiDetails, logger) {
         // Although we are uploading arbitrary file contents to the API, it's worth
         // noting that it's the API's job to validate that the contents is acceptable.
         // This API method is available to anyone with write access to the repo.
-        const payload = fs.readFileSync(await (0, util_1.bundleDb)(config, language, codeql, language));
+        const bundledDb = await (0, util_1.bundleDb)(config, language, codeql, language);
         try {
             await client.request(`POST https://uploads.github.com/repos/:owner/:repo/code-scanning/codeql/databases/:language?name=:name`, {
                 owner: repositoryNwo.owner,
                 repo: repositoryNwo.repo,
                 language,
                 name: `${language}-database`,
-                data: payload,
+                data: fs.createReadStream(bundledDb),
                 headers: {
                     authorization: `token ${apiDetails.auth}`,
                     "Content-Type": "application/zip",
+                    "Content-Length": fs.statSync(bundledDb).size,
                 },
             });
             logger.debug(`Successfully uploaded database for ${language}`);
diff --git a/lib/database-upload.js.map b/lib/database-upload.js.map
index 8d8834b31..b2363a1e2 100644
--- a/lib/database-upload.js.map
+++ b/lib/database-upload.js.map
@@ -1 +1 @@
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\ No newline at end of file
+{"version":3,"file":"database-upload.js","sourceRoot":"","sources":["../src/database-upload.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;AAAA,uCAAyB;AAEzB,4DAA8C;AAC9C,6CAA8D;AAC9D,qCAAqC;AAIrC,6CAA+B;AAC/B,iCAAkC;AAE3B,KAAK,UAAU,eAAe,CACnC,aAA4B,EAC5B,MAAc,EACd,UAA4B,EAC5B,MAAc;IAEd,IAAI,WAAW,CAAC,gBAAgB,CAAC,iBAAiB,CAAC,KAAK,MAAM,EAAE;QAC9D,MAAM,CAAC,KAAK,CAAC,wDAAwD,CAAC,CAAC;QACvE,OAAO;KACR;IAED,iDAAiD;IACjD,IAAI,MAAM,CAAC,aAAa,CAAC,IAAI,KAAK,IAAI,CAAC,aAAa,CAAC,MAAM,EAAE;QAC3D,MAAM,CAAC,KAAK,CAAC,kDAAkD,CAAC,CAAC;QACjE,OAAO;KACR;IAED,IAAI,CAAC,CAAC,MAAM,WAAW,CAAC,wBAAwB,EAAE,CAAC,EAAE;QACnD,4EAA4E;QAC5E,MAAM,CAAC,KAAK,CAAC,gDAAgD,CAAC,CAAC;QAC/D,OAAO;KACR;IAED,MAAM,MAAM,GAAG,IAAA,yBAAY,GAAE,CAAC;IAC9B,MAAM,MAAM,GAAG,MAAM,IAAA,kBAAS,EAAC,MAAM,CAAC,SAAS,CAAC,CAAC;IAEjD,KAAK,MAAM,QAAQ,IAAI,MAAM,CAAC,SAAS,EAAE;QACvC,8BAA8B;QAC9B,2EAA2E;QAC3E,8EAA8E;QAC9E,wEAAwE;QACxE,MAAM,SAAS,GAAG,MAAM,IAAA,eAAQ,EAAC,MAAM,EAAE,QAAQ,EAAE,MAAM,EAAE,QAAQ,CAAC,CAAC;QACrE,IAAI;YACF,MAAM,MAAM,CAAC,OAAO,CAClB,wGAAwG,EACxG;gBACE,KAAK,EAAE,aAAa,CAAC,KAAK;gBAC1B,IAAI,EAAE,aAAa,CAAC,IAAI;gBACxB,QAAQ;gBACR,IAAI,EAAE,GAAG,QAAQ,WAAW;gBAC5B,IAAI,EAAE,EAAE,CAAC,gBAAgB,CAAC,SAAS,CAAC;gBACpC,OAAO,EAAE;oBACP,aAAa,EAAE,SAAS,UAAU,CAAC,IAAI,EAAE;oBACzC,cAAc,EAAE,iBAAiB;oBACjC,gBAAgB,EAAE,EAAE,CAAC,QAAQ,CAAC,SAAS,CAAC,CAAC,IAAI;iBAC9C;aACF,CACF,CAAC;YACF,MAAM,CAAC,KAAK,CAAC,sCAAsC,QAAQ,EAAE,CAAC,CAAC;SAChE;QAAC,OAAO,CAAC,EAAE;YACV,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;YACf,4CAA4C;YAC5C,MAAM,CAAC,OAAO,CAAC,iCAAiC,QAAQ,KAAK,CAAC,EAAE,CAAC,CAAC;SACnE;KACF;AACH,CAAC;AAvDD,0CAuDC"}
\ No newline at end of file
diff --git a/src/database-upload.ts b/src/database-upload.ts
index 16e41ae37..4e13fdafb 100644
--- a/src/database-upload.ts
+++ b/src/database-upload.ts
@@ -40,9 +40,7 @@ export async function uploadDatabases(
     // Although we are uploading arbitrary file contents to the API, it's worth
     // noting that it's the API's job to validate that the contents is acceptable.
     // This API method is available to anyone with write access to the repo.
-    const payload = fs.readFileSync(
-      await bundleDb(config, language, codeql, language)
-    );
+    const bundledDb = await bundleDb(config, language, codeql, language);
     try {
       await client.request(
         `POST https://uploads.github.com/repos/:owner/:repo/code-scanning/codeql/databases/:language?name=:name`,
@@ -51,10 +49,11 @@ export async function uploadDatabases(
           repo: repositoryNwo.repo,
           language,
           name: `${language}-database`,
-          data: payload,
+          data: fs.createReadStream(bundledDb),
           headers: {
             authorization: `token ${apiDetails.auth}`,
             "Content-Type": "application/zip",
+            "Content-Length": fs.statSync(bundledDb).size,
           },
         }
       );