diff --git a/Dockerfile b/Dockerfile
index ab90050..368008b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,5 +5,6 @@ COPY CHECKS ${WORKDIR}
 
 RUN mkdir -p /app/
 COPY predeploy.sh /app/
+COPY postdeploy.sh /app/
 
 EXPOSE 3000
diff --git a/app.json b/app.json
index 0a6005e..75db67e 100644
--- a/app.json
+++ b/app.json
@@ -12,7 +12,8 @@
   },
   "scripts": {
     "dokku": {
-      "predeploy": "bash /app/predeploy.sh"
+      "predeploy": "bash /app/predeploy.sh",
+      "postdeploy": "bash /app/postdeploy.sh"
     }
   },
   "volumes": [
diff --git a/postdeploy.sh b/postdeploy.sh
new file mode 100755
index 0000000..8fb6fb1
--- /dev/null
+++ b/postdeploy.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+
+set -eu -o pipefail
+
+setup_letsencrypt_certs() {
+    set -eu
+
+    if [ ! -d "/home/dokku/gitea/letsencrypt" ]; then
+      echo "=====> Generating let's encrypt certificates"
+      dokku letsencrypt gitea
+    fi
+}
+
+main() {
+    set -eu
+
+    setup_letsencrypt_certs
+}
+
+main