diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 391c830d..e44e448b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -30,7 +30,7 @@ build:
     expire_in: 15 minutes
 
 sign:
-  image: nextcloudci/android:android-54
+  image: nextcloudci/android8:android-61
   stage: sign
   only:
     - main
diff --git a/scripts/sign-build.sh b/scripts/sign-build.sh
index 2b8b3304..e2931a82 100755
--- a/scripts/sign-build.sh
+++ b/scripts/sign-build.sh
@@ -9,6 +9,10 @@
 [ -z "${KS_FILE}" ] && { echo "Filename of keystore is missing (KS_FILE)"; exit 1; }
 [ -z "${OUTPUT}" ] && { echo "Missing filename of signed output (OUTPUT)"; exit 1; }
 
+# Update the docker container. curl is an outdated version which has to be updated.
+apt update
+apt upgrade curl
+
 KEYFILE=$(mktemp)
 curl -X GET "${INSTANCE}/api/v1/repos/${KS_REPO}/contents/${KS_FILE}?token=${BOT_TOKEN}" -H  "accept: application/json" | sed 's|"content":"|#|g' | cut -d '#' -f 2 | cut -d '"' -f 1 | base64 -d > ${KEYFILE}