diff --git a/Dockerfile b/Dockerfile
index 25bf442..ea3d019 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,6 +11,7 @@ RUN python3 -m venv "$PI_HOME" && . "$PI_HOME/bin/activate" \
     && pip3 install --upgrade pip \
     && pip3 install wheel \
     && pip3 install -r https://raw.githubusercontent.com/privacyidea/privacyidea/v"$PI_VERSION"/requirements.txt \
+    && pip3 install -r https://raw.githubusercontent.com/privacyidea/privacyidea/v"$PI_VERSION"/requirements-kerberos.txt \
     && pip3 install privacyidea=="$PI_VERSION" \
     && pip3 install -r requirements.txt
 
diff --git a/requirements.txt b/requirements.txt
index d1590f9..9b739fa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,2 @@
 psycopg2==2.9.9
-grpcio==1.64.1
-grpcio-tools==1.64.1
 gunicorn==22.0.0
-gssapi==1.8.3