diff --git a/lib/database-upload.js b/lib/database-upload.js
index 3f51505b2..610998cd4 100644
--- a/lib/database-upload.js
+++ b/lib/database-upload.js
@@ -44,24 +44,32 @@ async function uploadDatabases(repositoryNwo, config, apiDetails, logger) {
     const client = (0, api_client_1.getApiClient)();
     const codeql = await (0, codeql_1.getCodeQL)(config.codeQLCmd);
     for (const language of config.languages) {
-        // Upload the database bundle.
-        // 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));
         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,
-                headers: {
-                    authorization: `token ${apiDetails.auth}`,
-                    "Content-Type": "application/zip",
-                },
-            });
-            logger.debug(`Successfully uploaded database for ${language}`);
+            // Upload the database bundle.
+            // Although we are uploading arbitrary file contents to the API, it's worth
+            // noting that it's the API's job to validate that the contents is acceptable.
+            // This API method is available to anyone with write access to the repo.
+            const bundledDb = await (0, util_1.bundleDb)(config, language, codeql, language);
+            const bundledDbSize = fs.statSync(bundledDb).size;
+            const bundledDbReadStream = fs.createReadStream(bundledDb);
+            try {
+                await client.request(`POST https://uploads.github.com/repos/:owner/:repo/code-scanning/codeql/databases/:language?name=:name`, {
+                    owner: repositoryNwo.owner,
+                    repo: repositoryNwo.repo,
+                    language,
+                    name: `${language}-database`,
+                    data: bundledDbReadStream,
+                    headers: {
+                        authorization: `token ${apiDetails.auth}`,
+                        "Content-Type": "application/zip",
+                        "Content-Length": bundledDbSize,
+                    },
+                });
+                logger.debug(`Successfully uploaded database for ${language}`);
+            }
+            finally {
+                bundledDbReadStream.close();
+            }
         }
         catch (e) {
             console.log(e);
diff --git a/lib/database-upload.js.map b/lib/database-upload.js.map
index 8d8834b31..92068722b 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,IAAI;YACF,8BAA8B;YAC9B,2EAA2E;YAC3E,8EAA8E;YAC9E,wEAAwE;YACxE,MAAM,SAAS,GAAG,MAAM,IAAA,eAAQ,EAAC,MAAM,EAAE,QAAQ,EAAE,MAAM,EAAE,QAAQ,CAAC,CAAC;YACrE,MAAM,aAAa,GAAG,EAAE,CAAC,QAAQ,CAAC,SAAS,CAAC,CAAC,IAAI,CAAC;YAClD,MAAM,mBAAmB,GAAG,EAAE,CAAC,gBAAgB,CAAC,SAAS,CAAC,CAAC;YAC3D,IAAI;gBACF,MAAM,MAAM,CAAC,OAAO,CAClB,wGAAwG,EACxG;oBACE,KAAK,EAAE,aAAa,CAAC,KAAK;oBAC1B,IAAI,EAAE,aAAa,CAAC,IAAI;oBACxB,QAAQ;oBACR,IAAI,EAAE,GAAG,QAAQ,WAAW;oBAC5B,IAAI,EAAE,mBAAmB;oBACzB,OAAO,EAAE;wBACP,aAAa,EAAE,SAAS,UAAU,CAAC,IAAI,EAAE;wBACzC,cAAc,EAAE,iBAAiB;wBACjC,gBAAgB,EAAE,aAAa;qBAChC;iBACF,CACF,CAAC;gBACF,MAAM,CAAC,KAAK,CAAC,sCAAsC,QAAQ,EAAE,CAAC,CAAC;aAChE;oBAAS;gBACR,mBAAmB,CAAC,KAAK,EAAE,CAAC;aAC7B;SACF;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;AA7DD,0CA6DC"}
\ No newline at end of file
diff --git a/src/database-upload.ts b/src/database-upload.ts
index 16e41ae37..1886baa52 100644
--- a/src/database-upload.ts
+++ b/src/database-upload.ts
@@ -36,29 +36,34 @@ export async function uploadDatabases(
   const codeql = await getCodeQL(config.codeQLCmd);
 
   for (const language of config.languages) {
-    // Upload the database bundle.
-    // 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)
-    );
     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,
-          headers: {
-            authorization: `token ${apiDetails.auth}`,
-            "Content-Type": "application/zip",
-          },
-        }
-      );
-      logger.debug(`Successfully uploaded database for ${language}`);
+      // Upload the database bundle.
+      // Although we are uploading arbitrary file contents to the API, it's worth
+      // noting that it's the API's job to validate that the contents is acceptable.
+      // This API method is available to anyone with write access to the repo.
+      const bundledDb = await bundleDb(config, language, codeql, language);
+      const bundledDbSize = fs.statSync(bundledDb).size;
+      const bundledDbReadStream = fs.createReadStream(bundledDb);
+      try {
+        await client.request(
+          `POST https://uploads.github.com/repos/:owner/:repo/code-scanning/codeql/databases/:language?name=:name`,
+          {
+            owner: repositoryNwo.owner,
+            repo: repositoryNwo.repo,
+            language,
+            name: `${language}-database`,
+            data: bundledDbReadStream,
+            headers: {
+              authorization: `token ${apiDetails.auth}`,
+              "Content-Type": "application/zip",
+              "Content-Length": bundledDbSize,
+            },
+          }
+        );
+        logger.debug(`Successfully uploaded database for ${language}`);
+      } finally {
+        bundledDbReadStream.close();
+      }
     } catch (e) {
       console.log(e);
       // Log a warning but don't fail the workflow