diff --git a/README.md b/README.md
index e05d2c5..40fa497 100644
--- a/README.md
+++ b/README.md
@@ -333,6 +333,9 @@ git gtr config add gtr.copy.include "**/.env.example"
 
 # Run setup after creating worktrees
 git gtr config add gtr.hook.postCreate "npm install"
+
+# Re-source environment after gtr cd (runs in current shell)
+git gtr config add gtr.hook.postCd "source ./vars.sh"
 ```
 
 ### Team Configuration (.gtrconfig)
diff --git a/bin/gtr b/bin/gtr
index 77adb0d..ab739b2 100755
--- a/bin/gtr
+++ b/bin/gtr
@@ -1606,7 +1606,40 @@ gtr() {
   if [ "$#" -gt 0 ] && [ "$1" = "cd" ]; then
     shift
     local dir
-    dir="$(command git gtr go "$@")" && cd "$dir"
+    dir="$(command git gtr go "$@")" && cd "$dir" && {
+      local _gtr_hooks _gtr_hook _gtr_seen _gtr_config_file
+      _gtr_hooks=""
+      _gtr_seen=""
+      # Read from git config (local > global > system)
+      _gtr_hooks="$(git config --get-all gtr.hook.postCd 2>/dev/null)" || true
+      # Read from .gtrconfig if it exists
+      _gtr_config_file="$(git rev-parse --show-toplevel 2>/dev/null)/.gtrconfig"
+      if [ -f "$_gtr_config_file" ]; then
+        local _gtr_file_hooks
+        _gtr_file_hooks="$(git config -f "$_gtr_config_file" --get-all hooks.postCd 2>/dev/null)" || true
+        if [ -n "$_gtr_file_hooks" ]; then
+          if [ -n "$_gtr_hooks" ]; then
+            _gtr_hooks="$_gtr_hooks"$'\n'"$_gtr_file_hooks"
+          else
+            _gtr_hooks="$_gtr_file_hooks"
+          fi
+        fi
+      fi
+      if [ -n "$_gtr_hooks" ]; then
+        # Deduplicate while preserving order
+        _gtr_seen=""
+        export WORKTREE_PATH="$dir"
+        export REPO_ROOT="$(git rev-parse --show-toplevel 2>/dev/null)"
+        export BRANCH="$(git rev-parse --abbrev-ref HEAD 2>/dev/null)"
+        while IFS= read -r _gtr_hook; do
+          [ -z "$_gtr_hook" ] && continue
+          case "$_gtr_seen" in *"|$_gtr_hook|"*) continue ;; esac
+          _gtr_seen="$_gtr_seen|$_gtr_hook|"
+          eval "$_gtr_hook" || echo "gtr: postCd hook failed: $_gtr_hook" >&2
+        done <<< "$_gtr_hooks"
+        unset WORKTREE_PATH REPO_ROOT BRANCH
+      fi
+    }
   else
     command git gtr "$@"
   fi
@@ -1628,7 +1661,40 @@ gtr() {
   if [ "$#" -gt 0 ] && [ "$1" = "cd" ]; then
     shift
     local dir
-    dir="$(command git gtr go "$@")" && cd "$dir"
+    dir="$(command git gtr go "$@")" && cd "$dir" && {
+      local _gtr_hooks _gtr_hook _gtr_seen _gtr_config_file
+      _gtr_hooks=""
+      _gtr_seen=""
+      # Read from git config (local > global > system)
+      _gtr_hooks="$(git config --get-all gtr.hook.postCd 2>/dev/null)" || true
+      # Read from .gtrconfig if it exists
+      _gtr_config_file="$(git rev-parse --show-toplevel 2>/dev/null)/.gtrconfig"
+      if [ -f "$_gtr_config_file" ]; then
+        local _gtr_file_hooks
+        _gtr_file_hooks="$(git config -f "$_gtr_config_file" --get-all hooks.postCd 2>/dev/null)" || true
+        if [ -n "$_gtr_file_hooks" ]; then
+          if [ -n "$_gtr_hooks" ]; then
+            _gtr_hooks="$_gtr_hooks"$'\n'"$_gtr_file_hooks"
+          else
+            _gtr_hooks="$_gtr_file_hooks"
+          fi
+        fi
+      fi
+      if [ -n "$_gtr_hooks" ]; then
+        # Deduplicate while preserving order
+        _gtr_seen=""
+        export WORKTREE_PATH="$dir"
+        export REPO_ROOT="$(git rev-parse --show-toplevel 2>/dev/null)"
+        export BRANCH="$(git rev-parse --abbrev-ref HEAD 2>/dev/null)"
+        while IFS= read -r _gtr_hook; do
+          [ -z "$_gtr_hook" ] && continue
+          case "$_gtr_seen" in *"|$_gtr_hook|"*) continue ;; esac
+          _gtr_seen="$_gtr_seen|$_gtr_hook|"
+          eval "$_gtr_hook" || echo "gtr: postCd hook failed: $_gtr_hook" >&2
+        done <<< "$_gtr_hooks"
+        unset WORKTREE_PATH REPO_ROOT BRANCH
+      fi
+    }
   else
     command git gtr "$@"
   fi
@@ -1650,6 +1716,33 @@ function gtr
   if test (count $argv) -gt 0; and test "$argv[1]" = "cd"
     set -l dir (command git gtr go $argv[2..])
     and cd $dir
+    and begin
+      set -l _gtr_hooks
+      set -l _gtr_seen
+      # Read from git config (local > global > system)
+      set -l _gtr_git_hooks (git config --get-all gtr.hook.postCd 2>/dev/null)
+      # Read from .gtrconfig if it exists
+      set -l _gtr_config_file (git rev-parse --show-toplevel 2>/dev/null)"/.gtrconfig"
+      set -l _gtr_file_hooks
+      if test -f "$_gtr_config_file"
+        set _gtr_file_hooks (git config -f "$_gtr_config_file" --get-all hooks.postCd 2>/dev/null)
+      end
+      # Merge and deduplicate
+      set _gtr_hooks $_gtr_git_hooks $_gtr_file_hooks
+      if test (count $_gtr_hooks) -gt 0
+        set -lx WORKTREE_PATH "$dir"
+        set -lx REPO_ROOT (git rev-parse --show-toplevel 2>/dev/null)
+        set -lx BRANCH (git rev-parse --abbrev-ref HEAD 2>/dev/null)
+        for _gtr_hook in $_gtr_hooks
+          if test -n "$_gtr_hook"
+            if not contains -- "$_gtr_hook" $_gtr_seen
+              set -a _gtr_seen "$_gtr_hook"
+              eval "$_gtr_hook"; or echo "gtr: postCd hook failed: $_gtr_hook" >&2
+            end
+          end
+        end
+      end
+    end
   else
     command git gtr $argv
   end
@@ -1991,6 +2084,7 @@ CONFIGURATION OPTIONS:
   gtr.hook.postCreate      Post-create hooks (multi-valued)
   gtr.hook.preRemove       Pre-remove hooks (multi-valued, abort on failure)
   gtr.hook.postRemove      Post-remove hooks (multi-valued)
+  gtr.hook.postCd          Post-cd hooks (multi-valued, shell integration only)
 
 ────────────────────────────────────────────────────────────────────────────────
 
diff --git a/completions/_git-gtr b/completions/_git-gtr
index d58477f..935ac5a 100644
--- a/completions/_git-gtr
+++ b/completions/_git-gtr
@@ -172,7 +172,7 @@ _git-gtr() {
                 '--local[Use local git config]' \
                 '--global[Use global git config]' \
                 '--system[Use system git config]' \
-                '*:config key:(gtr.worktrees.dir gtr.worktrees.prefix gtr.defaultBranch gtr.editor.default gtr.ai.default gtr.provider gtr.copy.include gtr.copy.exclude gtr.copy.includeDirs gtr.copy.excludeDirs gtr.hook.postCreate gtr.hook.preRemove gtr.hook.postRemove)'
+                '*:config key:(gtr.worktrees.dir gtr.worktrees.prefix gtr.defaultBranch gtr.editor.default gtr.ai.default gtr.provider gtr.copy.include gtr.copy.exclude gtr.copy.includeDirs gtr.copy.excludeDirs gtr.hook.postCreate gtr.hook.preRemove gtr.hook.postRemove gtr.hook.postCd)'
               ;;
             set|add|unset)
               # Write operations only support --local and --global
@@ -180,7 +180,7 @@ _git-gtr() {
               _arguments \
                 '--local[Use local git config]' \
                 '--global[Use global git config]' \
-                '*:config key:(gtr.worktrees.dir gtr.worktrees.prefix gtr.defaultBranch gtr.editor.default gtr.ai.default gtr.provider gtr.copy.include gtr.copy.exclude gtr.copy.includeDirs gtr.copy.excludeDirs gtr.hook.postCreate gtr.hook.preRemove gtr.hook.postRemove)'
+                '*:config key:(gtr.worktrees.dir gtr.worktrees.prefix gtr.defaultBranch gtr.editor.default gtr.ai.default gtr.provider gtr.copy.include gtr.copy.exclude gtr.copy.includeDirs gtr.copy.excludeDirs gtr.hook.postCreate gtr.hook.preRemove gtr.hook.postRemove gtr.hook.postCd)'
               ;;
           esac
         fi
diff --git a/completions/git-gtr.fish b/completions/git-gtr.fish
index f0fb8f1..59fdd2e 100644
--- a/completions/git-gtr.fish
+++ b/completions/git-gtr.fish
@@ -135,6 +135,7 @@ complete -f -c git -n '__fish_git_gtr_using_command config' -a "
   gtr.hook.postCreate\t'Post-create hook'
   gtr.hook.preRemove\t'Pre-remove hook (abort on failure)'
   gtr.hook.postRemove\t'Post-remove hook'
+  gtr.hook.postCd\t'Post-cd hook (shell integration only)'
 "
 
 # Helper function to get branch names and special '1' for main repo
diff --git a/completions/gtr.bash b/completions/gtr.bash
index 77d5d09..86369d0 100644
--- a/completions/gtr.bash
+++ b/completions/gtr.bash
@@ -99,7 +99,7 @@ _git_gtr() {
             if [[ "$cur" == -* ]]; then
               COMPREPLY=($(compgen -W "--local --global --system" -- "$cur"))
             else
-              COMPREPLY=($(compgen -W "gtr.worktrees.dir gtr.worktrees.prefix gtr.defaultBranch gtr.editor.default gtr.ai.default gtr.provider gtr.copy.include gtr.copy.exclude gtr.copy.includeDirs gtr.copy.excludeDirs gtr.hook.postCreate gtr.hook.preRemove gtr.hook.postRemove" -- "$cur"))
+              COMPREPLY=($(compgen -W "gtr.worktrees.dir gtr.worktrees.prefix gtr.defaultBranch gtr.editor.default gtr.ai.default gtr.provider gtr.copy.include gtr.copy.exclude gtr.copy.includeDirs gtr.copy.excludeDirs gtr.hook.postCreate gtr.hook.preRemove gtr.hook.postRemove gtr.hook.postCd" -- "$cur"))
             fi
             ;;
           set|add|unset)
@@ -107,7 +107,7 @@ _git_gtr() {
             if [[ "$cur" == -* ]]; then
               COMPREPLY=($(compgen -W "--local --global" -- "$cur"))
             else
-              COMPREPLY=($(compgen -W "gtr.worktrees.dir gtr.worktrees.prefix gtr.defaultBranch gtr.editor.default gtr.ai.default gtr.provider gtr.copy.include gtr.copy.exclude gtr.copy.includeDirs gtr.copy.excludeDirs gtr.hook.postCreate gtr.hook.preRemove gtr.hook.postRemove" -- "$cur"))
+              COMPREPLY=($(compgen -W "gtr.worktrees.dir gtr.worktrees.prefix gtr.defaultBranch gtr.editor.default gtr.ai.default gtr.provider gtr.copy.include gtr.copy.exclude gtr.copy.includeDirs gtr.copy.excludeDirs gtr.hook.postCreate gtr.hook.preRemove gtr.hook.postRemove gtr.hook.postCd" -- "$cur"))
             fi
             ;;
         esac
diff --git a/docs/configuration.md b/docs/configuration.md
index 30f8eec..b419b69 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -292,17 +292,23 @@ git gtr config add gtr.hook.preRemove "npm run cleanup"
 
 # Post-remove hooks
 git gtr config add gtr.hook.postRemove "echo 'Cleaned up!'"
+
+# Post-cd hooks (run after gtr cd, in current shell)
+git gtr config add gtr.hook.postCd "source ./vars.sh"
 ```
 
 **Hook execution order:**
 
-| Hook         | Timing                   | Use Case                           |
-| ------------ | ------------------------ | ---------------------------------- |
-| `postCreate` | After worktree creation  | Setup, install dependencies        |
-| `preRemove`  | Before worktree deletion | Cleanup requiring directory access |
-| `postRemove` | After worktree deletion  | Notifications, logging             |
+| Hook         | Timing                           | Use Case                                    |
+| ------------ | -------------------------------- | ------------------------------------------- |
+| `postCreate` | After worktree creation          | Setup, install dependencies                 |
+| `preRemove`  | Before worktree deletion         | Cleanup requiring directory access          |
+| `postRemove` | After worktree deletion          | Notifications, logging                      |
+| `postCd`     | After `gtr cd` changes directory | Re-source environment, update shell context |
 
 > **Note:** Pre-remove hooks abort removal on failure. Use `--force` to skip failed hooks.
+>
+> **Note:** `postCd` hooks run in the **current shell** (not a subshell) so they can modify environment variables. They only run via `gtr cd` (shell integration), not `git gtr go`. Failures warn but don't undo the `cd`.
 
 **Environment variables available in hooks:**
 
diff --git a/lib/config.sh b/lib/config.sh
index 8e4d14f..1733598 100644
--- a/lib/config.sh
+++ b/lib/config.sh
@@ -90,6 +90,7 @@ cfg_map_to_file_key() {
     gtr.hook.postCreate)  echo "hooks.postCreate" ;;
     gtr.hook.preRemove)   echo "hooks.preRemove" ;;
     gtr.hook.postRemove)  echo "hooks.postRemove" ;;
+    gtr.hook.postCd)      echo "hooks.postCd" ;;
     gtr.editor.default)   echo "defaults.editor" ;;
     gtr.editor.workspace) echo "editor.workspace" ;;
     gtr.ai.default)       echo "defaults.ai" ;;
@@ -307,6 +308,7 @@ cfg_list() {
             hooks.postCreate) mapped_key="gtr.hook.postCreate" ;;
             hooks.preRemove)  mapped_key="gtr.hook.preRemove" ;;
             hooks.postRemove) mapped_key="gtr.hook.postRemove" ;;
+            hooks.postCd)     mapped_key="gtr.hook.postCd" ;;
             defaults.editor)  mapped_key="gtr.editor.default" ;;
             editor.workspace) mapped_key="gtr.editor.workspace" ;;
             defaults.ai)      mapped_key="gtr.ai.default" ;;
diff --git a/templates/.gtrconfig.example b/templates/.gtrconfig.example
index 4df34b6..46d2f22 100644
--- a/templates/.gtrconfig.example
+++ b/templates/.gtrconfig.example
@@ -49,6 +49,10 @@
     # Commands to run after removing a worktree
     # postRemove = echo "Removed worktree for branch $BRANCH"
 
+    # Commands to run after 'gtr cd' changes directory (shell integration only)
+    # Runs in the current shell (not a subshell) — can source files and set env vars
+    # postCd = source ./vars.sh
+
 [defaults]
     # Default editor for 'git gtr editor' command
     # Available: cursor, vscode, zed, windsurf, or custom via GTR_EDITOR_CMD