diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f6bd0a992..3eed4fce3 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -132,6 +132,7 @@ jobs:
         with:
           egress-policy: block
           allowed-endpoints: >
+            api.github.com:443
             azure.archive.ubuntu.com:80
             coveralls.io:443
             esm.ubuntu.com:443
@@ -188,12 +189,15 @@ jobs:
           egress-policy: block
           allowed-endpoints: >
             api.github.com:443
+            conda.anaconda.org:443
             coveralls.io:443
+            dap.service.does.not.exist:443
             files.pythonhosted.org:443
             github.com:443
             objects.githubusercontent.com:443
             pypi.org:443
             raw.githubusercontent.com:443
+            repo.anaconda.com:443
       - uses: actions/checkout@v4.1.1
       - name: Setup Conda (Micromamba) with Python${{ matrix.python-version }}
         uses: mamba-org/setup-micromamba@v1.7.3
diff --git a/CHANGES.rst b/CHANGES.rst
index 493b67347..604c4913e 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -22,6 +22,7 @@ Breaking changes
 ^^^^^^^^^^^^^^^^
 * `bump2version` has been replaced with `bump-my-version` to bump the version number using configurations set in the `pyproject.toml` file. (:issue:`1557`, :pull:`1569`).
 * `xclim`'s units registry and units formatting are now extended from `cf-xarray`. The exponent sign "^" is now never added in the ``units`` attribute. For example, square meters are given as "m2" instead of "m^2" by xclim, both are still accepted as input. (:issue:`1010`, :pull:`1590`).
+* `yamale` is now listed as a core dependency (was previously listed in the `dev` installation recipe). (:issue:`1595`, :pull:`1596`).
 
 Bug fixes
 ^^^^^^^^^
diff --git a/environment.yml b/environment.yml
index 9ad2acd11..04ae0e482 100644
--- a/environment.yml
+++ b/environment.yml
@@ -24,6 +24,7 @@ dependencies:
     - scipy >=1.2
     - statsmodels
     - xarray >=2022.06.0,<2023.11.0
+    - yamale
     # Extras
     - eofs
     - flox
@@ -70,7 +71,6 @@ dependencies:
     - tox
 #    - tox-conda  # Will be added when a tox@v4.0+ compatible plugin is released.
     - xdoctest
-    - yamale
     - yamllint
     - pip
     - pip:
diff --git a/pyproject.toml b/pyproject.toml
index 75545c2d8..267916710 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,7 +51,8 @@ dependencies = [
   "scikit-learn>=0.21.3",
   "scipy>=1.2",
   "statsmodels",
-  "xarray>=2022.06.0,<2023.11.0"
+  "xarray>=2022.06.0,<2023.11.0",
+  "yamale"
 ]
 
 [project.optional-dependencies]
@@ -84,7 +85,6 @@ dev = [
   "tox",
   # "tox-conda",  # Will be added when a tox@v4.0+ compatible plugin is released.
   "xdoctest",
-  "yamale",
   "yamllint",
   # Documentation and examples
   "distributed >=2.0",