diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 385bcd92..e8523d31 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -80,8 +80,8 @@ build-flatpak-amd64:
   before_script:
     - apt-get update && apt-get -y install flatpak-builder git python curl
     - flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
-    - flatpak --noninteractive install --user flathub org.kde.Platform//5.14
-    - flatpak --noninteractive install --user flathub org.kde.Sdk//5.14
+    - flatpak --noninteractive install --user flathub org.kde.Platform//5.15
+    - flatpak --noninteractive install --user flathub org.kde.Sdk//5.15
   script:
     - export VERSION=$(git describe)
     - mkdir -p build-flatpak
@@ -107,8 +107,8 @@ build-flatpak-arm64:
   before_script:
     - apt-get update && apt-get -y install flatpak-builder git python curl
     - flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
-    - flatpak --noninteractive install --user flathub org.kde.Platform//5.14
-    - flatpak --noninteractive install --user flathub org.kde.Sdk//5.14
+    - flatpak --noninteractive install --user flathub org.kde.Platform//5.15
+    - flatpak --noninteractive install --user flathub org.kde.Sdk//5.15
   script:
     - export VERSION=$(git describe)
     - mkdir -p build-flatpak