diff --git a/.github/workflows/cppcheck.yml b/.github/workflows/check.yml
similarity index 62%
rename from .github/workflows/cppcheck.yml
rename to .github/workflows/check.yml
index b62f38a2..b7f0b674 100644
--- a/.github/workflows/cppcheck.yml
+++ b/.github/workflows/check.yml
@@ -1,34 +1,49 @@
-name: cppcheck-action-test
+name: Checks
 on:
   pull_request:
 
 jobs:
-  build:
-    name: cppcheck-test
+  cppcheck:
+    name: Cppcheck
     runs-on: ubuntu-22.04
-    steps:
 
+    steps:
       - name: Checkout sources
         uses: actions/checkout@v4
+        with:
+          path: src/pg_stat_monitor
 
       - name: Checkout cppcheck sources
         uses: actions/checkout@v4
         with:
-          repository: 'danmar/cppcheck'
-          ref: '2.13.4'
+          repository: "danmar/cppcheck"
+          ref: "2.13.4"
           path: src/cppcheck
 
       - name: Build and install cppcheck
+        working-directory: src/cppcheck
         run: |
           mkdir build
           cd build
           cmake ..
           cmake --build .
           sudo cmake --install .
-        working-directory: src/cppcheck
 
       - name: Execute linter check with cppcheck
+        working-directory: src/pg_stat_monitor
         run: |
           set -x
           cppcheck --enable=all --inline-suppr --template='{file}:{line},{severity},{id},{message}' --error-exitcode=1 --suppress=missingIncludeSystem --suppress=missingInclude --suppress=unmatchedSuppression:pg_stat_monitor.c --check-config .
 
+  license:
+    name: License
+    runs-on: ubuntu-22.04
+
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+
+      - name: Check license headers
+        uses: apache/skywalking-eyes/header@v0.6.0
+        with:
+          token: "" # Prevent comments
diff --git a/.licenserc.yaml b/.licenserc.yaml
new file mode 100644
index 00000000..06a52691
--- /dev/null
+++ b/.licenserc.yaml
@@ -0,0 +1,19 @@
+header:
+  paths:
+    - "**/*.c"
+    - "**/*.h"
+  license:
+    pattern: |
+      .*\.(c|h)
+      .*
+
+      Portions Copyright © 2018-2024, Percona LLC and/or its affiliates
+
+      Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
+
+      Portions Copyright (c) 1994, The Regents of the University of California
+
+      IDENTIFICATION
+         contrib/pg_stat_monitor/.*\.(c|h)
+
+  comment: never
diff --git a/guc.c b/guc.c
index c98d3ce3..25823d88 100644
--- a/guc.c
+++ b/guc.c
@@ -1,14 +1,14 @@
 /*-------------------------------------------------------------------------
  *
- * guc.c: guc variable handling of pg_stat_monitor
+ * guc.c
+ *	  guc variable handling of pg_stat_monitor
  *
- * Portions Copyright © 2018-2020, Percona LLC and/or its affiliates
+ * Portions Copyright © 2018-2024, Percona LLC and/or its affiliates
  *
- * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
  *
  * Portions Copyright (c) 1994, The Regents of the University of California
  *
- *
  * IDENTIFICATION
  *	  contrib/pg_stat_monitor/guc.c
  *
diff --git a/hash_query.c b/hash_query.c
index c18e20ff..ff34a4cf 100644
--- a/hash_query.c
+++ b/hash_query.c
@@ -1,11 +1,11 @@
 /*-------------------------------------------------------------------------
  *
  * hash_query.c
- *		Track statement execution times across a whole database cluster.
+ *	  Track statement execution times across a whole database cluster.
  *
- * Portions Copyright © 2018-2020, Percona LLC and/or its affiliates
+ * Portions Copyright © 2018-2024, Percona LLC and/or its affiliates
  *
- * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
  *
  * Portions Copyright (c) 1994, The Regents of the University of California
  *
diff --git a/pg_stat_monitor.c b/pg_stat_monitor.c
index a2729cf6..f8425450 100644
--- a/pg_stat_monitor.c
+++ b/pg_stat_monitor.c
@@ -1,11 +1,11 @@
 /*-------------------------------------------------------------------------
  *
  * pg_stat_monitor.c
- *		Track statement execution times across a whole database cluster.
+ *	  Track statement execution times across a whole database cluster.
  *
- * Portions Copyright © 2018-2020, Percona LLC and/or its affiliates
+ * Portions Copyright © 2018-2024, Percona LLC and/or its affiliates
  *
- * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
  *
  * Portions Copyright (c) 1994, The Regents of the University of California
  *
diff --git a/pg_stat_monitor.h b/pg_stat_monitor.h
index 9cd590d1..a6ccc450 100644
--- a/pg_stat_monitor.h
+++ b/pg_stat_monitor.h
@@ -1,11 +1,11 @@
 /*-------------------------------------------------------------------------
  *
  * pg_stat_monitor.h
- *		Track statement execution times across a whole database cluster.
+ *	  Track statement execution times across a whole database cluster.
  *
- * Portions Copyright © 2018-2020, Percona LLC and/or its affiliates
+ * Portions Copyright © 2018-2024, Percona LLC and/or its affiliates
  *
- * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
  *
  * Portions Copyright (c) 1994, The Regents of the University of California
  *