diff --git a/bin/gctree-run.py b/bin/gctree-run.py
index 3ad9e7e06..9d5f7d256 100755
--- a/bin/gctree-run.py
+++ b/bin/gctree-run.py
@@ -47,10 +47,10 @@ def idfn():
 def install():
     cmds = ['#!/bin/bash']
     cmds += utils.mamba_cmds(args.env_label, only_prep=True)
-    cmds += ['micromamba create -n %s -c conda-forge python=3.9' % args.env_label]  # 3.10 currently has problems with ete
+    cmds += ['micromamba create -y -n %s -c conda-forge python=3.9' % args.env_label]  # 3.10 currently has problems with ete
     cmds += ['micromamba activate %s' % args.env_label]
-    cmds += ['micromamba install -c bioconda -c conda-forge phylip']
-    cmds += ['micromamba install -c conda-forge%s click' % ('' if args.no_dag else ' gctree')]
+    cmds += ['micromamba install -y -c bioconda -c conda-forge phylip']
+    cmds += ['micromamba install -y -c conda-forge%s click' % ('' if args.no_dag else ' gctree')]
     if args.no_dag:
         cmds += ['pip install gctree==3.3.0']  # I think having --user makes it install in ~/.local (outside mamba env)
     # micromamba remove -n gctree --all  # to nuke it and start over
diff --git a/projects/igphyml-run.py b/projects/igphyml-run.py
index 3f1f4fde2..0b2909d1d 100755
--- a/projects/igphyml-run.py
+++ b/projects/igphyml-run.py
@@ -25,9 +25,9 @@
 def install():
     cmds = ['#!/bin/bash']
     cmds += utils.mamba_cmds(args.env_label, only_prep=True)
-    cmds += ['micromamba create -n %s' % args.env_label]
+    cmds += ['micromamba create -y -n %s' % args.env_label]
     cmds += ['micromamba activate %s' % args.env_label]  #  python= 3.6 and 3.9 failed, so i let it choose, it chose 3.5 which seems to work
-    cmds += ['micromamba install -c bioconda -c conda-forge changeo']
+    cmds += ['micromamba install -y -c bioconda -c conda-forge changeo']
     # micromamba remove --all -n args.env_label  # to nuke it and start over
     cmds += ['cd packages']
     cmds += ['git clone https://bitbucket.org/kleinstein/igphyml']