diff --git a/distribution/update_version.py b/distribution/update_version.py
index 8422dfce354..0f567cd2140 100755
--- a/distribution/update_version.py
+++ b/distribution/update_version.py
@@ -336,7 +336,7 @@ def update_pixi(version: Version):
     tag = "version ="
     with open(path, "w") as fp:
         for line in lines:
-            if tag in line:
+            if line.startswith(tag):
                 line = f'{tag} "{version}"\n'
             fp.write(line)
 
diff --git a/pixi.toml b/pixi.toml
index 3e86897f9d7..4ed90c155b4 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -67,6 +67,6 @@ build-docs = { cmd = "python build_docs.py", cwd = "distribution" }
 build-dist = { cmd = "python build_dist.py", cwd = "distribution" }
 build-makefiles = { cmd = "python build_makefiles.py", cwd = "distribution" }
 test-dist-scripts = { cmd = "pytest -v --durations 0", cwd = "distribution" }
-version = "6.5.0"
+update-version = { cmd = "python update_version.py", cwd = "distribution" }
 deprecations = { cmd = "python deprecations.py", cwd = "doc/mf6io/mf6ivar" }
 sphinx = { cmd = "make html", cwd = ".build_rtd_docs" }
\ No newline at end of file