diff --git a/requirements_pi.txt b/requirements_pi.txt
index 1521262..abee2bc 100644
--- a/requirements_pi.txt
+++ b/requirements_pi.txt
@@ -1,19 +1,19 @@
-alembic==1.0.1
-Click==7.0
-Flask==1.0.2
-Flask-Migrate==2.3.0
-Flask-SQLAlchemy==2.3.2
-Flask-WTF==0.14.2
-itsdangerous==1.1.0
-Jinja2==2.10
-Mako==1.0.7
-MarkupSafe==1.0
-picamera==1.13
-Pillow==5.3.0
-python-dateutil==2.7.5
-python-editor==1.0.3
-six==1.11.0
-SQLAlchemy==1.2.12
-Werkzeug==0.14.1
-WTForms==2.2.1
-zipstream==1.1.4
+alembic>=1.0.1
+Click>=7.0
+Flask>=1.0.2
+Flask-Migrate>=2.3.0
+Flask-SQLAlchemy>=2.3.2
+Flask-WTF>=0.14.2
+itsdangerous>=1.1.0
+Jinja2>=2.10
+Mako>=1.0.7
+MarkupSafe>=1.0
+picamera>=1.13
+Pillow>=5.3.0
+python-dateutil>=2.7.5
+python-editor>=1.0.3
+six>=1.11.0
+SQLAlchemy>=1.2.12
+Werkzeug>=0.14.1
+WTForms>=2.2.1
+zipstream>=1.1.4