diff --git a/README.md b/README.md
index 439ac4c..b4e5330 100644
--- a/README.md
+++ b/README.md
@@ -115,14 +115,14 @@ test 1 - 213 ms :active, 2022-11-08T20:46:17.854+0100, 2022-11-08T20:46:18.067+0
 
 Options:
 
-| Key                                      | Type    | Description                                                        | Default                                                    |
-|------------------------------------------|---------|--------------------------------------------------------------------|------------------------------------------------------------|
-| `formats.html.enabled`                   | boolean | Generate report in html format                                     | `true`                                                     |
-| `formats.html.script.embed`              | boolean | If true mermaid source will be downloaded and used locally in html | `false`                                                    |
-| `formats.html.script.src`                | url     | Url to mermaid which should be used to generate html report        | `https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js` |
-| `formats.html.script.config.maxTextSize` | int     | Limit on the size of text used to generate diagrams                | `50000`                                                    |
-| `formats.json.enabled`                   | boolean | Generate report in json format                                     | `true`                                                     |
-| `formats.mermaid.enabled`                | boolean | Generate report in mermaid text format                             | `true`                                                     |
+| Key                                      | Type    | Description                                                        | Default                                                          |
+|------------------------------------------|---------|--------------------------------------------------------------------|------------------------------------------------------------------|
+| `formats.html.enabled`                   | boolean | Generate report in html format                                     | `true`                                                           |
+| `formats.html.script.embed`              | boolean | If true mermaid source will be downloaded and used locally in html | `false`                                                          |
+| `formats.html.script.src`                | url     | Url to mermaid which should be used to generate html report        | `https://cdn.jsdelivr.net/npm/mermaid@9.4.3/dist/mermaid.min.js` |
+| `formats.html.script.config.maxTextSize` | int     | Limit on the size of text used to generate diagrams                | `50000`                                                          |
+| `formats.json.enabled`                   | boolean | Generate report in json format                                     | `true`                                                           |
+| `formats.mermaid.enabled`                | boolean | Generate report in mermaid text format                             | `true`                                                           |
 
 `build.gradle.kts`:
 
@@ -136,7 +136,7 @@ configure<io.github.platan.tests_execution_chart.CreateTestsExecutionReportExten
                 config {
                     maxTextSize.set(110000)
                 }
-                src.set("https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js")
+                src.set("https://cdn.jsdelivr.net/npm/mermaid@9.4.3/dist/mermaid.min.js")
             }
         }
         json {
@@ -161,7 +161,7 @@ createTestsExecutionReport {
                 config {
                     maxTextSize = 110000
                 }
-                src = "https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js"
+                src = "https://cdn.jsdelivr.net/npm/mermaid@9.4.3/dist/mermaid.min.js"
             }
         }
         json {
@@ -230,6 +230,7 @@ Gradle can generate reports in JUnit XML format. But such reports cannot be used
 ### Changed
 
 - Use `dateFormat` compatible with Mermaid 9.4.2
+- Link to Mermaid 9.4.3 instead of the latest version
 
 ## 0.2.1 (07 March 2023)
 
diff --git a/src/main/kotlin/io/github/platan/tests_execution_chart/config/Script.kt b/src/main/kotlin/io/github/platan/tests_execution_chart/config/Script.kt
index 6fd0d03..33abeb5 100644
--- a/src/main/kotlin/io/github/platan/tests_execution_chart/config/Script.kt
+++ b/src/main/kotlin/io/github/platan/tests_execution_chart/config/Script.kt
@@ -7,7 +7,7 @@ import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.Nested
 import javax.inject.Inject
 
-private const val DEFAULT_SRC = "https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js"
+private const val DEFAULT_SRC = "https://cdn.jsdelivr.net/npm/mermaid@9.4.3/dist/mermaid.min.js"
 
 abstract class Script @Inject constructor(objectFactory: ObjectFactory) {