diff --git a/.bashrc.local b/.bashrc.local
index cca27d0..06e3a6c 100644
--- a/.bashrc.local
+++ b/.bashrc.local
@@ -9,12 +9,12 @@ alias update="(cd ~/git; make all)"
 export PYENV_ROOT="${HOME}/.pyenv"
 if [ -d "${PYENV_ROOT}" ]; then
     export PATH="${PYENV_ROOT}/bin:${PYENV_ROOT}/shims:${PATH}"
-    eval "$(pyenv init -)"
+    eval "$(pyenv init - --no-rehash)"
 fi
 #
 export N_PREFIX="$HOME"
 #
 if [ -d "${HOME}/.rbenv" ]; then
     export PATH="${HOME}/.rbenv/bin:${PATH}"
-    eval "$(rbenv init -)"
+    eval "$(rbenv init - --no-rehash)"
 fi
diff --git a/.zshrc.local b/.zshrc.local
index 6b6437d..43a260f 100644
--- a/.zshrc.local
+++ b/.zshrc.local
@@ -9,12 +9,12 @@ alias "update=(cd ~/git; make all)"
 export PYENV_ROOT="${HOME}/.pyenv"
 if [ -d "${PYENV_ROOT}" ]; then
     export PATH="${PYENV_ROOT}/bin:${PYENV_ROOT}/shims:${PATH}"
-    eval "$(pyenv init -)"
+    eval "$(pyenv init - --no-rehash)"
 fi
 #
 export N_PREFIX="$HOME"
 #
 if [ -d "${HOME}/.rbenv" ]; then
     export PATH="${HOME}/.rbenv/bin:${PATH}"
-    eval "$(rbenv init -)"
+    eval "$(rbenv init - --no-rehash)"
 fi