diff --git a/CONFIGURING.md b/CONFIGURING.md
index 09fb5ccf..56d1bcd0 100644
--- a/CONFIGURING.md
+++ b/CONFIGURING.md
@@ -68,12 +68,14 @@ Remote synchronization settings.
 
 Group name must refer to architecture, e.g. it should be `rsync_x86_64` for x86_64 architecture. Requires `rsync` package to be installed. Do not forget to configure ssh for user `ahriman`.
 
+* `command` - rsync command to run, space separated list of string, required.
 * `remote` - remote server to rsync (e.g. `1.2.3.4:5678:path/to/sync`), string, required.
 
 ### `s3_*` groups
 
 Group name must refer to architecture, e.g. it should be `s3_x86_64` for x86_64 architecture. Requires `aws-cli` package to be installed. Do not forget to configure it for user `ahriman`.
 
+* `command` - s3 command to run, space separated list of string, required.
 * `bucket` - bucket name (e.g. `s3://bucket/path`), string, required.
 
 ## `web_*` groups
diff --git a/package/etc/ahriman.ini b/package/etc/ahriman.ini
index bb31ce99..042b9edf 100644
--- a/package/etc/ahriman.ini
+++ b/package/etc/ahriman.ini
@@ -21,7 +21,6 @@ root = /var/lib/ahriman
 
 [sign]
 target =
-key =
 
 [report]
 target =
@@ -36,10 +35,10 @@ template_path = /usr/share/ahriman/repo-index.jinja2
 target =
 
 [rsync]
-remote =
+command = rsync --archive --verbose --compress --partial --delete
 
 [s3]
-bucket =
+command = aws s3 sync --quiet --delete
 
 [web]
 templates = /usr/share/ahriman
\ No newline at end of file
diff --git a/src/ahriman/core/upload/rsync.py b/src/ahriman/core/upload/rsync.py
index 93eeafaf..64e15009 100644
--- a/src/ahriman/core/upload/rsync.py
+++ b/src/ahriman/core/upload/rsync.py
@@ -40,6 +40,7 @@ class Rsync(Upload):
         """
         Upload.__init__(self, architecture, config)
         section = config.get_section_name("rsync", architecture)
+        self.command = config.getlist(section, "command")
         self.remote = config.get(section, "remote")
 
     def sync(self, path: Path) -> None:
@@ -47,14 +48,4 @@ class Rsync(Upload):
         sync data to remote server
         :param path: local path to sync
         """
-        Rsync._check_output(
-            "rsync",
-            "--archive",
-            "--verbose",
-            "--compress",
-            "--partial",
-            "--delete",
-            str(path),
-            self.remote,
-            exception=None,
-            logger=self.logger)
+        Rsync._check_output(*self.command, str(path), self.remote, exception=None, logger=self.logger)
diff --git a/src/ahriman/core/upload/s3.py b/src/ahriman/core/upload/s3.py
index 392cf421..98a3c577 100644
--- a/src/ahriman/core/upload/s3.py
+++ b/src/ahriman/core/upload/s3.py
@@ -41,6 +41,7 @@ class S3(Upload):
         Upload.__init__(self, architecture, config)
         section = config.get_section_name("s3", architecture)
         self.bucket = config.get(section, "bucket")
+        self.command = config.getlist(section, "command")
 
     def sync(self, path: Path) -> None:
         """
@@ -48,6 +49,4 @@ class S3(Upload):
         :param path: local path to sync
         """
         # TODO rewrite to boto, but it is bullshit
-        S3._check_output("aws", "s3", "sync", "--quiet", "--delete", str(path), self.bucket,
-                         exception=None,
-                         logger=self.logger)
+        S3._check_output(*self.command, str(path), self.bucket, exception=None, logger=self.logger)
diff --git a/tests/testresources/core/ahriman.ini b/tests/testresources/core/ahriman.ini
index e7faa097..c8efca23 100644
--- a/tests/testresources/core/ahriman.ini
+++ b/tests/testresources/core/ahriman.ini
@@ -21,7 +21,6 @@ root = /var/lib/ahriman
 
 [sign]
 target =
-key =
 
 [report]
 target =
@@ -36,10 +35,12 @@ template_path = ../web/templates/repo-index.jinja2
 target =
 
 [rsync]
+command = rsync --archive --verbose --compress --partial --delete
 remote =
 
 [s3]
 bucket =
+command = aws s3 sync --quiet --delete
 
 [web]
 templates = ../web/templates
\ No newline at end of file