diff --git a/Dockerfile b/Dockerfile
index b619cdb..f944d4e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -26,7 +26,7 @@ RUN <<EOT
 
   # Install Timescale Toolkit
   apt-get update
-  apt-get install -y --no-install-recommends "timescaledb-toolkit-postgresql-$POSTGRES_VERSION=$TIMESCALE_TOOLKIT_VERSION~debian$VERSION_ID"
+  apt-get install -y --no-install-recommends "timescaledb-toolkit-postgresql-$POSTGRES_VERSION=1:$TIMESCALE_TOOLKIT_VERSION~debian$VERSION_ID"
 
   # Cleanup
   apt-get purge -y curl