diff --git a/Dockerfile b/Dockerfile
index 54e8cc0..d575ff9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,12 +1,9 @@
-FROM python:3.10-slim
+FROM python:3.12-slim
 
 RUN ln -sf /bin/bash /bin/sh
 
-# To allow the Unicode +- sign to be printed, set IO encoding:
-ENV PYTHONIOENCODING UTF-8
-
 # To ensure output printed correctly, alter buffering:
-ENV PYTHONUNBUFFERED 0
+ENV PYTHONUNBUFFERED=0
 
 RUN mkdir -p /usr/src/app
 WORKDIR /usr/src/app
diff --git a/requirements.txt b/requirements.txt
index 672ac8e..961468c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,8 @@
 # Dependencies:
-Flask==2.3.2
+Flask==2.3.3
 mpmath==1.3.0
-numpy==1.24.3
+numpy==1.26.4
 sympy==1.12
-gunicorn==20.1.0
-pytest==7.3.1
-pytest-cov==4.0.0
+gunicorn==22.0.0
+pytest==8.3.2
+pytest-cov==5.0.0