diff --git a/meltano.yml b/meltano.yml
index 2169b0b..17c2493 100644
--- a/meltano.yml
+++ b/meltano.yml
@@ -40,7 +40,7 @@ plugins:
   mappers:
   - name: meltano-map-transformer
     namespace: meltano_map_transformer
-    pip_url: -e .
+    pip_url: --pre -e .
     executable: meltano-map-transform
     settings:
     - name: stream_maps
diff --git a/poetry.lock b/poetry.lock
index 7a0106f..3d50147 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1103,4 +1103,4 @@ test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools",
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.8"
-content-hash = "01852ecbcd3c6d42e7eedf85f7b09419656e29032be70c177f377b701ca925a7"
+content-hash = "f76c000088dbca01934caee2d16bbfe97ae7d54dc88291eea493e920c19bcc97"
diff --git a/pyproject.toml b/pyproject.toml
index dd0b60c..425cae2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,8 @@ documentation = "https://github.com/MeltanoLabs/meltano-map-transform#readme"
 python = ">=3.8"
 
 [tool.poetry.dependencies.singer-sdk]
-version = "~=0.40.0"
+version = ">=0.40.0"
+allow-prereleases = true
 extras = [
   "faker",
 ]