From 07a657b06bb474d26c75a80a4f3d4e2f7541f158 Mon Sep 17 00:00:00 2001
From: Yifan ZENG <99973623+yifanzeng0408@users.noreply.github.com>
Date: Sat, 20 Apr 2024 07:15:30 +0800
Subject: [PATCH] Update Ubuntu version and dependency library versions for CI
 testing (#11)

---
 .github/workflows/tests.yml |  4 ++--
 requirements.txt            | 12 ++++++------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 8f83ccb..37044d7 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,8 +7,8 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest]
-        python-version: ['3.6']
+        os: [ubuntu-20.04]
+        python-version: ['3.6.7']
 
     steps:
     - uses: actions/checkout@v3
diff --git a/requirements.txt b/requirements.txt
index 457c8c8..d0431a2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,14 +1,14 @@
 pre-commit
 black
-numpy
-sympy
+numpy==1.19.5
+sympy==1.9
 matplotlib
-casadi
-cvxopt
-pathos
+casadi==3.5.5
+cvxopt==1.3.0
+pathos==0.2.8
 flake8==3.9.2
 tox==3.24.3
 pytest==6.2.5
 pytest-cov==2.12.1
 mypy==0.910
-scipy
\ No newline at end of file
+scipy==1.5.2
\ No newline at end of file