diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 96a008e8..c48734c9 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -22,7 +22,7 @@ jobs:
       matrix:
         cfg:
           - conda-env: psi
-            python-version: 3.7
+            python-version: 3.9
             label: Psi4-1.5
             runs-on: ubuntu-latest
             pytest: ""
@@ -58,7 +58,7 @@ jobs:
             pytest: ""
 
           - conda-env: qcore
-            python-version: 3.7
+            python-version: 3.9
             label: QCore
             runs-on: ubuntu-latest
             pytest: ""
diff --git a/devtools/conda-envs/psi-nightly.yaml b/devtools/conda-envs/psi-nightly.yaml
index df3ae4b2..929498fa 100644
--- a/devtools/conda-envs/psi-nightly.yaml
+++ b/devtools/conda-envs/psi-nightly.yaml
@@ -14,6 +14,7 @@ dependencies:
   - qcelemental >=0.26.0
   - pydantic>=2.0.0
   - msgpack-python
+  - numpy=1
 
     # Testing
   - pytest
diff --git a/devtools/conda-envs/psi.yaml b/devtools/conda-envs/psi.yaml
index 0a2cd762..0b9708c6 100644
--- a/devtools/conda-envs/psi.yaml
+++ b/devtools/conda-envs/psi.yaml
@@ -9,6 +9,7 @@ dependencies:
   - geometric
   - intel-openmp!=2019.5
   - pymdi
+  - numpy=1
 
     # Core
   - python