diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 79edf7f..de2231b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - { os: ubuntu-latest, container: '',           shell_path: /bin/bash,    label: bash-5.x-linux, coverage: true }
+          - { os: ubuntu-latest, container: '',           shell_path: /bin/bash,    label: bash-5.x-linux }
           - { os: macos-latest,  container: '',           shell_path: /bin/bash,    label: bash-3.2-macos }
           - { os: macos-latest,  container: '',           shell_path: brew,         label: bash-5.x-macos }
           - { os: ubuntu-latest, container: rockylinux:8, shell_path: /bin/bash,    label: bash-4.4-linux }
@@ -47,17 +47,6 @@ jobs:
         if: matrix.container == '' && runner.os == 'Linux' && contains(matrix.shell_path, 'zsh')
         run: sudo apt-get update && sudo apt-get install -y zsh
 
-      - name: Install kcov (coverage, Linux)
-        if: matrix.coverage
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y cmake binutils-dev libcurl4-openssl-dev libdw-dev libiberty-dev
-          wget -q https://github.com/SimonKagstrom/kcov/archive/refs/tags/v43.tar.gz
-          tar xzf v43.tar.gz
-          (cd kcov-43 && mkdir -p build && cd build && cmake -DCMAKE_INSTALL_PREFIX="$HOME/kcov" .. && make && make install)
-          rm -rf kcov-43 v43.tar.gz
-          echo "$HOME/kcov/bin" >> "$GITHUB_PATH"
-
       - name: Install Homebrew bash (macOS bash 5.x)
         if: matrix.shell_path == 'brew'
         run: |
@@ -81,40 +70,5 @@ jobs:
       - name: Run tests (${{ matrix.label }})
         # test.sh self-sources ~/.xshrc, so running it under $SHELL_PATH makes
         # the utilities execute under that shell (bash, or zsh's ksh emulation).
-        if: matrix.coverage != true
         run: |
           "$SHELL_PATH" ~/.xsh/repo/xsh-lib/core/test.sh
-
-      - name: Run tests with coverage (${{ matrix.label }})
-        # Pass the script DIRECTLY (not `bash test.sh`): kcov then uses its shell
-        # collector. `bash test.sh` makes kcov trace the bash ELF binary and
-        # record 0 lines. --include-path scopes the report to this lib's function
-        # utilities; script-type utilities run as child `bash` and aren't traced.
-        if: matrix.coverage
-        run: |
-          chmod +x "$HOME/.xsh/repo/xsh-lib/core/test.sh"
-          # Scope to the function utilities (script utilities run as child bash and
-          # aren't instrumentable).
-          kcov --include-path="$HOME/.xsh/repo/xsh-lib/core/functions" "$PWD/coverage" "$HOME/.xsh/repo/xsh-lib/core/test.sh"
-          # Normalize kcov's cobertura to repo-relative, line-only paths.
-          cob="$(find "$PWD/coverage" -name cobertura.xml | head -1)"
-          sed -i -E \
-            -e 's#<source>[^<]*</source>#<source>.</source>#' \
-            -e 's#filename="#filename="functions/#g' \
-            -e 's/ branch(es)?-(rate|covered|valid)="[^"]*"//g' \
-            "$cob"
-          # Keep only the cobertura so codecov-action's auto-search uploads just it
-          # (kcov also writes coverage.json/codecov.json with absolute paths).
-          find "$PWD/coverage" -type f ! -name cobertura.xml -delete
-
-      - name: Upload coverage to Codecov
-        if: matrix.coverage
-        uses: codecov/codecov-action@v5
-        env:
-          # codecov CLI's GPG self-check on its own download fails intermittently.
-          CC_SKIP_VALIDATION: 'true'
-        with:
-          # Mirror alexzhangs/xsh's WORKING setup: let codecov-action auto-discover
-          # the kcov report (no files:/disable_search:).
-          token: ${{ secrets.CODECOV_TOKEN }}
-          fail_ci_if_error: false
diff --git a/README.md b/README.md
index 505ed52..22d6741 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,6 @@
 [![GitHub last commit](https://img.shields.io/github/last-commit/xsh-lib/core.svg?style=flat-square)](https://github.com/xsh-lib/core/commits/master)
 
 [![CI](https://github.com/xsh-lib/core/actions/workflows/ci.yml/badge.svg)](https://github.com/xsh-lib/core/actions/workflows/ci.yml)
-[![codecov](https://codecov.io/github/xsh-lib/core/graph/badge.svg?token=9N6P7MY18U)](https://codecov.io/github/xsh-lib/core)
 [![CodeFactor](https://www.codefactor.io/repository/github/xsh-lib/core/badge)](https://www.codefactor.io/repository/github/xsh-lib/core)
 [![GitHub issues](https://img.shields.io/github/issues/xsh-lib/core.svg?style=flat-square)](https://github.com/xsh-lib/core/issues)
 [![GitHub pull requests](https://img.shields.io/github/issues-pr/xsh-lib/core.svg?style=flat-square)](https://github.com/xsh-lib/core/pulls)
diff --git a/codecov.yml b/codecov.yml
deleted file mode 100644
index c9f4b0a..0000000
--- a/codecov.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-# Coverage is scoped to the function utilities and the cobertura is rewritten to
-# repo-relative paths (functions/...) in CI, so no path fixes are needed here.
-# Coverage is informational, not a merge gate (only function-type utilities are
-# instrumentable; script utilities run as child processes kcov cannot trace).
-# Coverage is scoped to the function utilities and rewritten to repo-relative
-# paths (functions/...) in CI, so no path fixes/ignores are needed here.
-# Informational only (script utilities aren't instrumentable).
-coverage:
-  status:
-    project:
-      default:
-        informational: true
-    patch:
-      default:
-        informational: true
-
-comment: false