diff --git a/m/tent/configuration.nix b/m/tent/configuration.nix
index 2b7f3f42..afbb2dbc 100644
--- a/m/tent/configuration.nix
+++ b/m/tent/configuration.nix
@@ -11,6 +11,7 @@
     ./nix-serve.nix
     ./gitlab-runner.nix
     ./gitea.nix
+    ./openproject.nix
     ../hut/public-inbox.nix
     ../hut/msmtp.nix
     ../module/p.nix
diff --git a/m/tent/nginx.nix b/m/tent/nginx.nix
index 71207a43..d390871e 100644
--- a/m/tent/nginx.nix
+++ b/m/tent/nginx.nix
@@ -52,6 +52,16 @@ in
           proxy_pass http://127.0.0.1:8081;
           proxy_redirect http:// $scheme://;
         }
+        location /op {
+          proxy_pass http://127.0.0.1:8080;
+          proxy_pass_header  Server;
+          proxy_redirect     off;
+          proxy_set_header   X-Forwarded-Proto https;          
+          proxy_set_header   Host $host;
+          proxy_set_header   X-Real-IP $remote_addr;
+          proxy_set_header   X-Scheme $scheme;
+          proxy_pass_request_headers on;
+        }
         location /grafana {
           proxy_pass http://127.0.0.1:2342;
           proxy_redirect http:// $scheme://;
diff --git a/m/tent/openproject.nix b/m/tent/openproject.nix
new file mode 100644
index 00000000..2afd085c
--- /dev/null
+++ b/m/tent/openproject.nix
@@ -0,0 +1,51 @@
+{ pkgs, ... }:
+
+let
+  dataDir = "/var/lib/openproject/assets";
+in
+{
+  # TODO: Create a new user and group to run openproject
+
+  # Ensure directory exists
+  systemd.tmpfiles.rules = [
+    "d ${dataDir} 777 root root"
+  ];
+
+  systemd.services.openproject = let
+    openprojectSrc = pkgs.fetchFromGitHub {
+      owner = "opf";
+      repo = "openproject-docker-compose";
+      rev = "b66694f26020a205fbefd697530fee287d1ddea2"; # branch stable/17
+      sha256 = "sha256-m23vM0NyaTA54sjAHlFJ8mOhOjqp9CAciLx4UxzFfHI=";
+    };
+    envFile = pkgs.writeText ".env" ''
+    # https://www.openproject.org/docs/installation-and-operations/configuration/environment/
+    TAG=17-slim
+    OPENPROJECT_HTTPS=true
+    SECRET_KEY_BASE=OVERWRITE_ME
+    OPENPROJECT_HOST__NAME=jungle.bsc.es
+    PORT=127.0.0.1:8080
+    OPENPROJECT_RAILS__RELATIVE__URL__ROOT=/op
+    IMAP_ENABLED=false
+    DATABASE_URL=postgres://postgres:p4ssw0rd@db/openproject?pool=20&encoding=unicode&reconnect=true
+    RAILS_MIN_THREADS=4
+    RAILS_MAX_THREADS=16
+    PGDATA="/var/lib/postgresql/data"
+    OPDATA="${dataDir}"
+    COLLABORATIVE_SERVER_URL=ws://localhost:8080/hocuspocus
+    COLLABORATIVE_SERVER_SECRET=secret12345
+    '';
+  in {
+    # Needs docker-compose package
+    path = with pkgs; [ docker-compose ];
+    script = ''
+      docker-compose \
+        -p openproject \
+        -f ${openprojectSrc}/docker-compose.yml \
+        --env-file ${envFile} \
+        up --build --pull always
+    '';
+    wantedBy = [ "multi-user.target" ];
+    after = [ "docker.service" "docker.socket" ];
+  };
+}