diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7766e84..ae35575 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - update changelog following 'keep a changelog' format
 - run code-styles Github Actions on PHP 8.1
 - update symfony checker to use new symfonycorp/security-checker-action
+- use assertion with Delta on PHPUnit float values
 
 ### Added
 - add run of tests on Github Actions
diff --git a/tests/SwisstopoConverterWGSToMN03Tests.php b/tests/SwisstopoConverterWGSToMN03Tests.php
index b5461b7..5a52a17 100644
--- a/tests/SwisstopoConverterWGSToMN03Tests.php
+++ b/tests/SwisstopoConverterWGSToMN03Tests.php
@@ -20,10 +20,8 @@ public function testFromMN03ToWGS(): void
     {
         $swiss_converter = new SwisstopoConverter();
         $coordinates = $swiss_converter->fromMN03ToWGS(554680, 145807);
-        $this->assertSame([
-      'lat' => 46.462057617639346,
-      'long' => 6.848673659076181,
-    ], $coordinates);
+        $this->assertEqualsWithDelta(46.462057617639, $coordinates['lat'], 0.0001);
+        $this->assertEqualsWithDelta(6.8486736590762, $coordinates['long'], 0.0001);
     }
 
     /**
@@ -48,7 +46,7 @@ public function testFromMN03ToWGSLatitude(): void
     {
         $swiss_converter = new SwisstopoConverter();
         $latitude = $this->invokeMethod($swiss_converter, 'fromMN03ToWGSLatitude', [554680, 145807]);
-        $this->assertEquals(46.462057617639, $latitude);
+        $this->assertEqualsWithDelta(46.462057617639, $latitude, 0.0001);
     }
 
     /**
@@ -60,7 +58,7 @@ public function testFromMN03ToWGSLongitude(): void
     {
         $swiss_converter = new SwisstopoConverter();
         $longitude = $this->invokeMethod($swiss_converter, 'fromMN03ToWGSLongitude', [554680, 145807]);
-        $this->assertEquals(6.8486736590762, $longitude);
+        $this->assertEqualsWithDelta(6.8486736590762, $longitude, 0.0001);
     }
 
     /**
diff --git a/tests/SwisstopoConverterWGSToMN95Tests.php b/tests/SwisstopoConverterWGSToMN95Tests.php
index a60c4a4..264568a 100644
--- a/tests/SwisstopoConverterWGSToMN95Tests.php
+++ b/tests/SwisstopoConverterWGSToMN95Tests.php
@@ -20,10 +20,8 @@ public function testFromMN95ToWGS(): void
     {
         $swiss_converter = new SwisstopoConverter();
         $coordinates = $swiss_converter->fromMN95ToWGS(2555047, 1145923);
-        $this->assertSame([
-      'lat' => 46.46312579498212,
-      'long' => 6.8534397262208095,
-    ], $coordinates);
+        $this->assertEqualsWithDelta(46.463125794982, $coordinates['lat'], 0.0001);
+        $this->assertEqualsWithDelta(6.8534397262208, $coordinates['long'], 0.0001);
     }
 
     /**
@@ -74,7 +72,7 @@ public function testFromMN95ToWGSLatitude(): void
     {
         $swiss_converter = new SwisstopoConverter();
         $latitude = $this->invokeMethod($swiss_converter, 'fromMN95ToWGSLatitude', [2555047, 1145923]);
-        $this->assertEquals(46.463125794982, $latitude);
+        $this->assertEqualsWithDelta(46.463125794982, $latitude, 0.0001);
     }
 
     /**
@@ -86,6 +84,6 @@ public function testFromMN95ToWGSLongitude(): void
     {
         $swiss_converter = new SwisstopoConverter();
         $longitude = $this->invokeMethod($swiss_converter, 'fromMN95ToWGSLongitude', [2555047, 1145923]);
-        $this->assertEquals(6.8534397262208, $longitude);
+        $this->assertEqualsWithDelta(6.8534397262208, $longitude, 0.0001);
     }
 }