diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 963a346..d4baf24 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,35 +15,35 @@ jobs:
         include:
           - optionals: "sage"
             sagelib: "9.3"
-            python: "3.9.15"
+            python: "3.9"
           - optionals: "sage"
             sagelib: "10.0"
-            python: "3.10.8"
+            python: "3.10"
           - optionals: "sage,sage_flatsurf,pyeantic,pyintervalxt,pyflatsurf,pynormaliz,surface_dynamics"
-             sagelib: "10.4"
-             python: "3.12.15"
+            sagelib: "10.4"
+            python: "3.12"
           # Test optional dependencies in isolation
           - optionals: "sage"
             sagelib: "10.4"
-            python: "3.12.15"
+            python: "3.12"
           - optionals: "sage,sage_flatsurf"
             sagelib: "10.4"
-            python: "3.12.15"
+            python: "3.12"
           - optionals: "sage,pyeantic"
             sagelib: "10.4"
-            python: "3.12.15"
+            python: "3.12"
           - optionals: "sage,pyintervalxt"
             sagelib: "10.4"
-            python: "3.12.15"
+            python: "3.12"
           - optionals: "sage,pynormaliz"
             sagelib: "10.4"
-            python: "3.12.15"
+            python: "3.12"
           - optionals: "sage,surface_dynamics"
             sagelib: "10.4"
-            python: "3.12.15"
+            python: "3.12"
           - optionals: "sage,pyflatsurf"
             sagelib: "10.4"
-            python: "3.12.15"
+            python: "3.12"
     steps:
       - uses: actions/checkout@v2
         with: { submodules: recursive }
diff --git a/environment.yml b/environment.yml
index a2cfedb..1845e53 100644
--- a/environment.yml
+++ b/environment.yml
@@ -18,12 +18,10 @@ dependencies:
   - sagelib >=9.3
   # some of the tests rely on ipywidgets which is not required by sagelib
   - ipywidgets
-  # Work around https://github.com/conda-forge/givaro-feedstock/issues/13
-  - givaro=4.1.1=h192cbe9_1
   - sage-flatsurf  # optional: sage_flatsurf
-  - pyeantic >=1,<2  # optional: pyeantic
+  - pyeantic >=1  # optional: pyeantic
   - pyintervalxt >=3,<4  # optional: pyintervalxt
-  - pyflatsurf >=3.10.1,<4 # optional: pyflatsurf
+  - pyflatsurf >=3.10.1 # optional: pyflatsurf
   # Work around https://github.com/conda-forge/pynormaliz-feedstock/issues/10 by pinning normaliz and pynormaliz
   - pynormaliz 2.17 # optional: pynormaliz
   - normaliz 3.9.4  # optional: pynormaliz