diff --git a/Dockerfile b/Dockerfile
index 855711e..888974a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,7 +13,7 @@ RUN apk update && apk add wget tar bash \
     && rm glibc-2.32-r0.apk \
     && wget --no-iri -qO- https://micromamba.snakepit.net/api/micromamba/linux-64/latest | tar -xvj bin/micromamba \
     && touch /root/.bashrc \
-    && ./bin/micromamba shell init -s bash -p /opt/conda  \
+    && ./bin/micromamba shell init -s bash -r /opt/conda  \
     && cp /root/.bashrc /opt/conda/bashrc
 
 COPY environment.yml /tmp/
diff --git a/environment.yml b/environment.yml
index edaf824..6a685e2 100644
--- a/environment.yml
+++ b/environment.yml
@@ -4,6 +4,7 @@ channels:
   - bioconda
   - defaults
 dependencies:
+  - python >=3.9,<3.12
   - biopython>=1.78
   - xopen>=1.5.0
   - requests>=2.25.1