diff --git a/continuous_integration/environment-3.10.yaml b/continuous_integration/environment-3.10.yaml
index 13c970c87e6..f3914e8ae9a 100644
--- a/continuous_integration/environment-3.10.yaml
+++ b/continuous_integration/environment-3.10.yaml
@@ -44,6 +44,7 @@ dependencies:
   - requests
   - scikit-learn
   - scipy
+  - setproctitle
   - sortedcollections
   - tblib
   - toolz
diff --git a/continuous_integration/environment-3.11.yaml b/continuous_integration/environment-3.11.yaml
index 976ea2fb5c2..256999899d1 100644
--- a/continuous_integration/environment-3.11.yaml
+++ b/continuous_integration/environment-3.11.yaml
@@ -38,6 +38,7 @@ dependencies:
   - requests
   - scikit-learn
   - scipy
+  - setproctitle
   - sortedcollections
   - tblib
   - toolz
diff --git a/continuous_integration/environment-3.12.yaml b/continuous_integration/environment-3.12.yaml
index 7627ef70c79..e33c82a30e9 100644
--- a/continuous_integration/environment-3.12.yaml
+++ b/continuous_integration/environment-3.12.yaml
@@ -38,6 +38,7 @@ dependencies:
   - requests
   - scikit-learn
   - scipy
+  - setproctitle
   - sortedcollections
   - tblib
   - toolz
diff --git a/continuous_integration/environment-3.13.yaml b/continuous_integration/environment-3.13.yaml
index 8112cc2c0e9..3e22fa4b466 100644
--- a/continuous_integration/environment-3.13.yaml
+++ b/continuous_integration/environment-3.13.yaml
@@ -37,6 +37,7 @@ dependencies:
   - requests
   - scikit-learn
   - scipy
+  - setproctitle
   - sortedcollections
   - tblib
   - toolz
diff --git a/continuous_integration/environment-3.14.yaml b/continuous_integration/environment-3.14.yaml
index 3dea58af26d..b39f35c9d08 100644
--- a/continuous_integration/environment-3.14.yaml
+++ b/continuous_integration/environment-3.14.yaml
@@ -37,6 +37,7 @@ dependencies:
   - requests
   - scikit-learn
   - scipy
+  - setproctitle
   - sortedcollections
   - tblib
   - toolz
diff --git a/distributed/proctitle.py b/distributed/proctitle.py
index 8e50c80057e..d2b130cb026 100644
--- a/distributed/proctitle.py
+++ b/distributed/proctitle.py
@@ -16,7 +16,7 @@ def enable_proctitle_on_children():
     Enable setting the process title on this process' children and
     grandchildren.
     """
-    os.environ["DASK_PARENT"] = str(os.getpid())
+    os.environ["__DASK_PARENT_PID"] = str(os.getpid())
 
 
 def enable_proctitle_on_current():
@@ -37,7 +37,7 @@ def setproctitle(title):
     enabled = _enabled
     if not enabled:
         try:
-            enabled = int(os.environ.get("DASK_PARENT", "")) != os.getpid()
+            enabled = int(os.environ.get("__DASK_PARENT_PID", "")) != os.getpid()
         except ValueError:  # pragma: no cover
             pass
     if enabled: