diff --git a/build/linux/flatpak/org.gimp.GIMP-nightly.json b/build/linux/flatpak/org.gimp.GIMP-nightly.json
index 1c285471d4..b8e2bd9514 100644
--- a/build/linux/flatpak/org.gimp.GIMP-nightly.json
+++ b/build/linux/flatpak/org.gimp.GIMP-nightly.json
@@ -135,8 +135,8 @@
             "sources": [
                 {
                     "type": "archive",
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-                    "sha256": "6f57641fb12b019867a766e602252ed4ccb26d7354e3a15688fe9c85a391716e",
+                    "url": "https://github.com/AcademySoftwareFoundation/openexr/archive/refs/tags/v3.4.8.tar.gz",
+                    "sha256": "0dd8d50e7f04219f3f925702564e994f9acdc6133ba537ec75eb6208119bec33",
                     "x-checker-data": {
                         "type": "anitya",
                         "project-id": 13289,