diff --git a/.github/workflows/pre-release.yml b/.github/workflows/pre-release.yml
index 9816d41a..7ac21d18 100644
--- a/.github/workflows/pre-release.yml
+++ b/.github/workflows/pre-release.yml
@@ -37,7 +37,7 @@ jobs:
       fail-fast: false
       max-parallel: 4
       matrix:
-        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.8", "3.9", "3.10"]
         os: [ubuntu-20.04, macOS-latest, windows-latest]
     steps:
       - uses: actions/checkout@v3
diff --git a/test/geometry_test.py b/test/geometry_test.py
index fac0b6b8..b19b0c2a 100644
--- a/test/geometry_test.py
+++ b/test/geometry_test.py
@@ -24,8 +24,8 @@ def test_rotate_points():
     print("Observer", X, Y)
     print("return", xs_back, ys_back)
 
-    assert xs == approx(xs_back, abs=4e-7)
-    assert ys == approx(ys_back, abs=4e-7)
+    assert xs == approx(xs_back, abs=1e-6)
+    assert ys == approx(ys_back, abs=1e-6)
 
 
 def test_rotate_coords(coords):