diff --git a/avaframeConnector_provider.py b/avaframeConnector_provider.py
index 5472d02..046f47c 100644
--- a/avaframeConnector_provider.py
+++ b/avaframeConnector_provider.py
@@ -59,11 +59,39 @@ def find_python():
     raise Exception("Python executable not found")
 
 
+# Pin: the connector is only compatible with avaframe < 2.0
+avaFrameSpec = "avaframe<2.0"
+
+def installAvaframe():
+    pythonExe = find_python()
+    subprocess.call(
+        [pythonExe, "-m", "pip", "install", "--user", avaFrameSpec]
+    )
+
+
+def avaframeMajor():
+    from avaframe.version import getVersion
+
+    try:
+        return int(getVersion().split(".")[0])
+    except (ValueError, AttributeError):
+        return None
+
+
 try:
     import avaframe
+
+    _major = avaframeMajor()
+    if _major is not None and _major >= 2:
+        QMessageBox.information(
+            None,
+            "INFO",
+            "AvaFrame >=2.0 detected; the connector requires <2.0. "
+            "Downgrading now — please restart QGIS afterwards.",
+        )
+        installAvaframe()
 except ModuleNotFoundError:
-    # subprocess.call(["pip3", "install", "--upgrade", "--user", "pandas", "numpy"])
-    subprocess.call(["pip3", "install", "avaframe", "--user"])
+    installAvaframe()
     try:
         import avaframe
     except ModuleNotFoundError:
diff --git a/pyproject.toml b/pyproject.toml
index 83c7712..bd495d5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,6 +47,7 @@ platforms = ["linux-64"]
 
 [tool.pixi.dependencies]
 python = "<3.14"
+numpy = "<2"
 setuptools = "*"
 setuptools-scm = "*"
 
@@ -60,7 +61,8 @@ pixi-pycharm = "*"
 black = "*"
 
 [tool.pixi.feature.dev.pypi-dependencies]
-avaframe = { path = "../AvaFrame/", editable = true }
+#avaframe = { path = "../AvaFrame/", editable = true }
+avaframe = ">=1.13.2, <2"
 
 # Feature qgis
 [tool.pixi.feature.qgis.dependencies]
@@ -70,4 +72,4 @@ qgis = ">=3.22"
 [tool.pixi.environments]
 default = { features = ["dev"], solve-group = "default" }
 dev = ["dev"]
-qgis = ["qgis", "dev"]
\ No newline at end of file
+qgis = ["qgis", "dev"]