diff --git a/etc/environment.yml b/etc/environment.yml
index 25cee3eda..1c638cb8f 100644
--- a/etc/environment.yml
+++ b/etc/environment.yml
@@ -15,7 +15,7 @@ dependencies:
   - ruff
 
   # test
-  - coverage
+  - coverage<=7.6.4
   - flaky
   - filelock
   - jupyter
diff --git a/pyproject.toml b/pyproject.toml
index 2a4532f31..b294b7b9e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ lint = [
 ]
 test = [
     "flopy[lint]",
-    "coverage",
+    "coverage <=7.6.4",
     "flaky",
     "filelock",
     "jupyter",