diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index eb5ee6e..ccb0786 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 2.0.3
+current_version = 2.0.4
 commit = True
 tag = True
 
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index 3a05302..b748d3b 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -23,4 +23,4 @@ jobs:
         uses: docker/build-push-action@v5
         with:
           push: true
-          tags: wingechr/ptx-boa:2.0.3
+          tags: wingechr/ptx-boa:2.0.4
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0af280c..e46b5e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@
 
 - fix bug regarding snapshot weightings ([#548](https://github.com/agoenergy/ptx-boa/pull/549))
 
+## 2.0.4 (2024-09-11)
+
+- Disable Green Iron cost calculations for maintenance
+- add possiblity to define parameter space in offline optimization script
+
 ## 2.0.3 (2024-07-15)
 
 - upgrade pypsa requirements to 0.28
diff --git a/Dockerfile b/Dockerfile
index ea683ba..1334738 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM python:3.10-slim
-LABEL version="2.0.3"
+LABEL version="2.0.4"
 
 RUN apt-get update
 RUN apt-get install -y git
diff --git a/README.md b/README.md
index 00d0fa0..368d245 100644
--- a/README.md
+++ b/README.md
@@ -68,7 +68,7 @@ scp -r ptxboa2:ptx-boa_offline_optimization/optimization_cache/* .
 # connect to server
 ssh ptxboa
 # pull latest image from dockerhub
-VERSION=2.0.3
+VERSION=2.0.4
 docker pull wingechr/ptx-boa:$VERSION
 # stop and delete the currently running container "app"
 docker stop app
diff --git a/app/sidebar.py b/app/sidebar.py
index 0c6502b..2097951 100644
--- a/app/sidebar.py
+++ b/app/sidebar.py
@@ -95,7 +95,6 @@ def main_settings(api):
             "Product:",
             [
                 "Ammonia",
-                "Green Iron",
                 "Hydrogen",
                 "LOHC",
                 "Methane",
diff --git a/app/tab_info.py b/app/tab_info.py
index 0753c96..5868c65 100644
--- a/app/tab_info.py
+++ b/app/tab_info.py
@@ -4,7 +4,7 @@
 
 from app.ptxboa_functions import read_markdown_file
 
-__version__ = "2.0.3"
+__version__ = "2.0.4"
 
 
 def content_info():
diff --git a/ptxboa_streamlit.py b/ptxboa_streamlit.py
index e596cc5..7777c26 100644
--- a/ptxboa_streamlit.py
+++ b/ptxboa_streamlit.py
@@ -6,7 +6,7 @@
 >>> streamlit run  ptxboa_streamlit.py
 """
 
-__version__ = "2.0.3"
+__version__ = "2.0.4"
 
 import logging
 
@@ -91,6 +91,12 @@
 
 st.title("PtX Business Opportunity Analyser")
 
+with st.container():
+    st.warning(
+        "**Info:** The calculation of costs for producing Green Iron"
+        " is currently under revision and will be released in the coming days."
+    )
+
 with st.container():
     if st.session_state["edit_input_data"]:
         st.info("Data editing mode **ON**")