diff --git a/completion/bash/task.bash b/completion/bash/task.bash
index de93e4c83a..0b19329eb1 100644
--- a/completion/bash/task.bash
+++ b/completion/bash/task.bash
@@ -1,6 +1,7 @@
 # vim: set tabstop=2 shiftwidth=2 expandtab:
 
 _GO_TASK_COMPLETION_LIST_OPTION='--list-all'
+TASK_CMD="${TASK_EXE:-task}"
 
 function _task()
 {
@@ -52,4 +53,4 @@ function _task()
   __ltrim_colon_completions "$cur"
 }
 
-complete -F _task task
+complete -F _task "$TASK_CMD"
diff --git a/completion/fish/task.fish b/completion/fish/task.fish
index e8640fe4a5..06ca941744 100644
--- a/completion/fish/task.fish
+++ b/completion/fish/task.fish
@@ -1,4 +1,4 @@
-set -l GO_TASK_PROGNAME task
+set -l GO_TASK_PROGNAME (if set -q GO_TASK_PROGNAME; echo $GO_TASK_PROGNAME; else if set -q TASK_EXE; echo $TASK_EXE; else; echo task; end)
 
 function __task_get_tasks --description "Prints all available tasks with their description" --inherit-variable GO_TASK_PROGNAME
   # Check if the global task is requested
diff --git a/completion/zsh/_task b/completion/zsh/_task
index 7fe50aed1d..c96036778a 100755
--- a/completion/zsh/_task
+++ b/completion/zsh/_task
@@ -1,6 +1,7 @@
 #compdef task
-compdef _task task
 typeset -A opt_args
+TASK_CMD="${TASK_EXE:-task}"
+compdef _task "$TASK_CMD"
 
 _GO_TASK_COMPLETION_LIST_OPTION="${GO_TASK_COMPLETION_LIST_OPTION:---list-all}"
 
@@ -10,7 +11,7 @@ function __task_list() {
     local -i enabled=0
     local taskfile item task desc
 
-    cmd=(task)
+    cmd=($TASK_CMD)
     taskfile=${(Qv)opt_args[(i)-t|--taskfile]}
     taskfile=${taskfile//\~/$HOME}
 
diff --git a/website/src/docs/installation.md b/website/src/docs/installation.md
index 6b37769d91..4a7e03bb37 100644
--- a/website/src/docs/installation.md
+++ b/website/src/docs/installation.md
@@ -332,21 +332,28 @@ config:
 This method loads the completion script from the currently installed version of
 task every time you create a new shell. This ensures that your completions are
 always up-to-date.
+If your executable isn’t named task, set the `TASK_EXE` environment variable before running eval.
 
 ::: code-group
 
 ```shell [bash]
 # ~/.bashrc
+
+# export TASK_EXE='go-task' if needed
 eval "$(task --completion bash)"
 ```
 
 ```shell [zsh]
 # ~/.zshrc
+
+# export TASK_EXE='go-task' if needed
 eval "$(task --completion zsh)"
 ```
 
 ```shell [fish]
 # ~/.config/fish/config.fish
+
+# export TASK_EXE='go-task' if needed
 task --completion fish | source
 ```