conda · jaimergp · Jul 16, 2024 · Jul 16, 2024 · Jul 16, 2024 · Jul 16, 2024
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
@@ -67,6 +67,7 @@ jobs:
               - '*.py'
               - '.github/workflows/tests.yml'
               - 'tests/**'
+              - 'dev/requirements.txt'
           # /CONDA-LIBMAMBA-SOLVER CHANGE
 
   # windows test suite

diff --git a/dev/requirements.txt b/dev/requirements.txt
@@ -3,7 +3,7 @@ pip
 # run-time
 boltons>=23.0.0
 conda>=23.7.3
-libmamba>=1.5.6
-libmambapy>=1.5.6
+libmamba>=1.5.6,<2.0.0dev0
+libmambapy>=1.5.6,<2.0.0dev0
 # be explicit about sqlite because sometimes it's removed from the env :shrug:
 sqlite
diff --git a/news/492-libmambapy-pin b/news/492-libmambapy-pin
@@ -0,0 +1,19 @@
+### Enhancements
+
+* <news item>
+
+### Bug fixes
+
+* Pin `libmambapy <2` to defend against upcoming API changes. (#492)
+
+### Deprecations
+
+* <news item>
+
+### Docs
+
+* <news item>
+
+### Other
+
+* <news item>
diff --git a/pyproject.toml b/pyproject.toml
@@ -24,7 +24,7 @@ classifiers = [
 requires-python = ">=3.8"
 dependencies = [
   "conda >=23.7.3",
-  "libmambapy >=1.5.6",
+  "libmambapy >=1.5.6,<2.0.0dev0",
   "boltons >=23.0.0",
 ]
 dynamic = [

diff --git a/recipe/meta.yaml b/recipe/meta.yaml
@@ -22,7 +22,7 @@ requirements:
   run:
     - python >=3.8
     - conda >=23.7.3
-    - libmambapy >=1.5.6
+    - libmambapy >=1.5.6,<2.0.0dev0
     - boltons >=23.0.0
 
 test: