diff --git a/maloja/__pkginfo__.py b/maloja/__pkginfo__.py
index 415b002..296c657 100644
--- a/maloja/__pkginfo__.py
+++ b/maloja/__pkginfo__.py
@@ -21,7 +21,8 @@ requires = [
 	"wand>=0.5.4",
 	"jinja2>=2.11",
 	"lru-dict>=1.1.6",
-	"css_html_js_minify>=2.5.5"
+	"css_html_js_minify>=2.5.5",
+	"psutil>=5.8.0"
 ]
 resources = [
 	"web/*/*/*",
diff --git a/pyproject.toml b/pyproject.toml
index b5d05d5..74a224b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,8 @@ dependencies = [
 	"wand>=0.5.4",
 	"jinja2>=2.11",
 	"lru-dict>=1.1.6",
-	"css_html_js_minify>=2.5.5"
+	"css_html_js_minify>=2.5.5",
+	"psutil>=5.8.0"
 ]
 
 [project.scripts]
diff --git a/requirements.txt b/requirements.txt
index e761615..bd9ec70 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,3 +7,4 @@ wand>=0.5.4
 jinja2>=2.11
 lru-dict>=1.1.6
 css_html_js_minify>=2.5.5
+psutil>=5.8.0