diff --git a/Dockerfile b/Dockerfile
index b5718cf..19e4fd3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,7 +25,8 @@ RUN apk --no-cache add \
     py3-markupsafe \
     py3-six \
     py3-asn1 \
-    py3-numpy
+    py3-numpy \
+    py3-psycopg2
 
 RUN pip3 install --upgrade \
     https://github.com/tulir/mautrix-telegram/tarball/master#egg=mautrix_telegram[all]