diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 1d58bb76..e6d64f35 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -28,12 +28,6 @@ jobs:
           - "29.3"
         experimental: [false]
         include:
-          - os: ubuntu-latest
-            emacs-version: "26.3"
-            experimental: false
-          - os: windows-latest
-            emacs-version: "26.3"
-            experimental: false
           - os: ubuntu-latest
             emacs-version: "27.2"
             experimental: false
diff --git a/Eask b/Eask
index 3ac3e5f2..aa384368 100644
--- a/Eask
+++ b/Eask
@@ -14,7 +14,7 @@
 (source "gnu")
 (source "melpa")
 
-(depends-on "emacs" "26.1")
+(depends-on "emacs" "27.2")
 (depends-on "nadvice")
 
 (setq network-security-level 'low)  ; see https://github.com/jcs090218/setup-emacs-windows/issues/156#issuecomment-932956432
diff --git a/core-test b/core-test
index 772112ad..7d75ceb5 160000
--- a/core-test
+++ b/core-test
@@ -1 +1 @@
-Subproject commit 772112adb7aec5fffedf869d0d5a54c8374a0547
+Subproject commit 7d75ceb5bd2e01de40fcb2d1ef91411f8cf4a402
diff --git a/editorconfig-core-handle.el b/editorconfig-core-handle.el
index 69eb45f0..a0635cb6 100644
--- a/editorconfig-core-handle.el
+++ b/editorconfig-core-handle.el
@@ -33,6 +33,9 @@
 ;;; Code:
 
 (require 'cl-lib)
+(when (eval-when-compile (version< emacs-version "28.1"))
+  ;; For `string-trim'
+  (require 'subr-x))
 
 (require 'editorconfig-fnmatch)
 
@@ -187,8 +190,8 @@ If CONF is not found return nil."
               (setq props nil)
               (setq pattern newpattern)))
 
-           ((looking-at "\\([^=: \t]+\\)[ \t]*[=:][ \t]*\\(.*?\\)[ \t]*$")
-            (let ((key (downcase (match-string 1)))
+           ((looking-at "\\([^=: \t][^=:]*\\)[ \t]*[=:][ \t]*\\(.*?\\)[ \t]*$")
+            (let ((key (downcase (string-trim (match-string 1))))
                   (value (match-string 2)))
               (if pattern
                   (push `(,key . ,value)
diff --git a/editorconfig.el b/editorconfig.el
index 29a4f783..74f68614 100644
--- a/editorconfig.el
+++ b/editorconfig.el
@@ -5,7 +5,7 @@
 ;; Author: EditorConfig Team <editorconfig@googlegroups.com>
 ;; Version: 0.11.0
 ;; URL: https://github.com/editorconfig/editorconfig-emacs#readme
-;; Package-Requires: ((emacs "26.1"))
+;; Package-Requires: ((emacs "27.2"))
 ;; Keywords: convenience editorconfig
 
 ;; See