diff --git a/.github/AUTHORS.md b/.github/AUTHORS.md
index df346f3325..d31bb64987 100644
--- a/.github/AUTHORS.md
+++ b/.github/AUTHORS.md
@@ -8,4 +8,5 @@ Contributors
 * Andrew Kingston - [@aptkingston](https://github.com/aptkingston)
 * Michael Drury - [@mike12345567](https://github.com/mike12345567)
 * Peter Clement - [@PClmnt](https://github.com/PClmnt)
-* Rory Powell - [@Rory-Powell](https://github.com/Rory-Powell)
\ No newline at end of file
+* Rory Powell - [@Rory-Powell](https://github.com/Rory-Powell)
+* Michaël St-Georges [@CSLTech](https://github.com/CSLTech)
\ No newline at end of file
diff --git a/packages/builder/src/components/design/settings/controls/S3DataSourceSelect.svelte b/packages/builder/src/components/design/settings/controls/S3DataSourceSelect.svelte
index d5d42f1514..c52532508c 100644
--- a/packages/builder/src/components/design/settings/controls/S3DataSourceSelect.svelte
+++ b/packages/builder/src/components/design/settings/controls/S3DataSourceSelect.svelte
@@ -5,7 +5,7 @@
   export let value = null
 
   $: dataSources = $datasources.list
-    .filter(ds => ds.source === "S3" && !ds.config?.endpoint)
+    .filter(ds => ds.source === "S3")
     .map(ds => ({
       label: ds.name,
       value: ds._id,
diff --git a/packages/server/src/api/controllers/static/index.ts b/packages/server/src/api/controllers/static/index.ts
index 7cc08e1b5c..63240c8ecb 100644
--- a/packages/server/src/api/controllers/static/index.ts
+++ b/packages/server/src/api/controllers/static/index.ts
@@ -292,11 +292,6 @@ export const getSignedUploadURL = async function (ctx: Ctx) {
     ctx.throw(400, "The specified datasource could not be found")
   }
 
-  // Ensure we aren't using a custom endpoint
-  if (datasource?.config?.endpoint) {
-    ctx.throw(400, "S3 datasources with custom endpoints are not supported")
-  }
-
   // Determine type of datasource and generate signed URL
   let signedUrl
   let publicUrl
@@ -309,6 +304,7 @@ export const getSignedUploadURL = async function (ctx: Ctx) {
     try {
       const s3 = new AWS.S3({
         region: awsRegion,
+        endpoint: datasource?.config?.endpoint as string,
         accessKeyId: datasource?.config?.accessKeyId as string,
         secretAccessKey: datasource?.config?.secretAccessKey as string,
         apiVersion: "2006-03-01",
@@ -316,7 +312,11 @@ export const getSignedUploadURL = async function (ctx: Ctx) {
       })
       const params = { Bucket: bucket, Key: key }
       signedUrl = s3.getSignedUrl("putObject", params)
-      publicUrl = `https://${bucket}.s3.${awsRegion}.amazonaws.com/${key}`
+      if (datasource?.config?.endpoint) {
+        publicUrl = `${datasource.config.endpoint}/${bucket}/${key}`
+      } else {
+        publicUrl = `https://${bucket}.s3.${awsRegion}.amazonaws.com/${key}`
+      }
     } catch (error: any) {
       ctx.throw(400, error)
     }