diff --git a/Dockerfile b/Dockerfile
index ff34993..45eb9ba 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@ COPY . /git/
 RUN find . -type d -name .git -exec git describe --always --dirty > /git-version.txt \;
 
 
-FROM python:3.13
+FROM python:3.12
 
 EXPOSE 8080
 
diff --git a/requirements.txt b/requirements.txt
index aad665e..dda37ec 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
-tornado==6.5
-isodate==0.7.2
-pytest==8.3.5
-schwifty==2025.1.0
-Cerberus==1.3.7
+tornado==6.4
+isodate==0.6.1
+pytest==8.0.1
+schwifty==2024.1.1.post0
+Cerberus==1.3.5
 validator-collection==1.5.0