diff --git a/.github/actions/install-obsplus/action.yml b/.github/actions/install-obsplus/action.yml
index 6d6897aa..a296014f 100644
--- a/.github/actions/install-obsplus/action.yml
+++ b/.github/actions/install-obsplus/action.yml
@@ -34,11 +34,6 @@ runs:
       run: |
         python --version
 
-    - name: ensure setuptools is available
-      shell: bash -l {0}
-      run: |
-        python -m pip install --upgrade setuptools
-
     - name: install obsplus
       shell: bash -l {0}
       run: |
diff --git a/.github/test_conda_env.yml b/.github/test_conda_env.yml
index 6ba22d13..d6354dfa 100644
--- a/.github/test_conda_env.yml
+++ b/.github/test_conda_env.yml
@@ -5,10 +5,9 @@ channels:
 dependencies:
   - numpy
   - scipy
-  - obspy
+  - obspy>=1.5
   - pytables
   - pandas
   - pytest
   - pandoc
   - pydantic
-  - setuptools
diff --git a/pyproject.toml b/pyproject.toml
index afdbff6f..e3d1c8f1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,14 +47,13 @@ keywords = ["geophysics", "Seismology"]
 
 dependencies = [
     "numpy>1.24.4",
-    "obspy >= 1.4.0",
+    "obspy >= 1.5",
     "pandas >= 1.0",
     "progressbar2",
     "pydantic >= 2.0, <3.0",
     "scipy",
     "tables",
     "typing-extensions",
-    "setuptools",
 ]
 
 [project.optional-dependencies]