diff --git a/charts/sophora-import-job/Chart.yaml b/charts/sophora-import-job/Chart.yaml
index cde33b2..6b24c3a 100644
--- a/charts/sophora-import-job/Chart.yaml
+++ b/charts/sophora-import-job/Chart.yaml
@@ -15,7 +15,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 1.0.2
+version: 1.1.0
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
diff --git a/charts/sophora-import-job/README.md b/charts/sophora-import-job/README.md
index d25e273..14de1eb 100644
--- a/charts/sophora-import-job/README.md
+++ b/charts/sophora-import-job/README.md
@@ -8,6 +8,11 @@ A one-time Sophora Importer that runs as a k8s job and imports the data from s3
 
 Additional environment variables are supported via `importer.extraEnv`. The variables have to be defined in kubernetes env format. 
 
+## Supported archive formats
+
+* `.zip`
+* `.tar.gz`
+
 ## Import transformation files via S3 or HTTP
 
 Activate transformations by setting `transformation.enabled` to `true`. Now you can reference one or more zip files via s3 or http 
@@ -51,7 +56,7 @@ transformation:
       secretName: "read-only-bucket-secret"
       bucketName: "bucket-with-transformations"
       zipPaths:
-        - "/transformation-data.zip"
+        - "/transformation-data.tar.gz"
     useSaxon: true
     saxonLicenceSecretName: "saxon-license"
     saxonLicenceSecretKey: "saxon-license.lic"
diff --git a/charts/sophora-import-job/scripts/copy_data_to_import_dirs.sh b/charts/sophora-import-job/scripts/copy_data_to_import_dirs.sh
index f414b31..ae5469e 100644
--- a/charts/sophora-import-job/scripts/copy_data_to_import_dirs.sh
+++ b/charts/sophora-import-job/scripts/copy_data_to_import_dirs.sh
@@ -8,7 +8,9 @@ downloadDurationMillis=$((downloadEnd-jobStart))
 downloadDurationSeconds=$(awk -v millis=$downloadDurationMillis 'BEGIN { print ( millis / 1000 ) }')
 
 for file in `ls *.zip`; do unzip "$file"; done
-rm *.zip;
+for file in `ls *.tar.gz`; do tar -zxvf "$file"; done
+rm *.zip
+rm *.tar.gz
 mkdir -p /import/incoming
 mkdir -p /import/temp
 mkdir -p /import/success