diff --git a/.azure-pipelines/azure-pipelines-linux.yml b/.azure-pipelines/azure-pipelines-linux.yml
index abcbeb9..875d996 100755
--- a/.azure-pipelines/azure-pipelines-linux.yml
+++ b/.azure-pipelines/azure-pipelines-linux.yml
@@ -13,6 +13,7 @@ jobs:
         UPLOAD_PACKAGES: 'True'
         DOCKER_IMAGE: quay.io/condaforge/linux-anvil-cos7-x86_64
   timeoutInMinutes: 360
+  variables: {}
 
   steps:
   # configure qemu binfmt-misc running.  This allows us to run docker containers
diff --git a/.scripts/build_steps.sh b/.scripts/build_steps.sh
index a4d638b..2f3df6c 100755
--- a/.scripts/build_steps.sh
+++ b/.scripts/build_steps.sh
@@ -65,7 +65,7 @@ if [[ "${BUILD_WITH_CONDA_DEBUG:-0}" == 1 ]]; then
     # Drop into an interactive shell
     /bin/bash
 else
-    conda build "${RECIPE_ROOT}" -m "${CI_SUPPORT}/${CONFIG}.yaml" \
+    conda-build "${RECIPE_ROOT}" -m "${CI_SUPPORT}/${CONFIG}.yaml" \
         --suppress-variables ${EXTRA_CB_OPTIONS:-} \
         --clobber-file "${CI_SUPPORT}/clobber_${CONFIG}.yaml" \
         --extra-meta flow_run_id="${flow_run_id:-}" remote_url="${remote_url:-}" sha="${sha:-}"
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 56a9990..d1c6d84 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -15,7 +15,7 @@ source:
 build:
   script: {{ PYTHON }} -m pip install . -vv
   noarch: python
-  number: 0
+  number: 1
 
 requirements:
   host:
@@ -33,17 +33,17 @@ requirements:
     - ml_dtypes
   run_constrained:
     - tensorflow >=2.15.0,<2.17.0a
-    - jax 0.4
-    - torch 2.1
+    - jax 0.4.*
+    - pytorch 2.1.*
 
 test:
   requires:
     - pip
+    - jax
   commands:
     - pip check
-    # even the numpy backend requires jax....
-    # https://github.com/keras-team/keras/issues/18840
-    # - KERAS_BACKEND=numpy python -c "import keras"
+    - KERAS_BACKEND=numpy python -c "import keras"
+    - KERAS_BACKEND=jax python -c "import keras"
 
 about:
   home: https://github.com/keras-team/keras