diff --git a/bin/ng-ts-codegen.js b/bin/ng-ts-codegen.js
index a0bc7d0..485d2db 100644
--- a/bin/ng-ts-codegen.js
+++ b/bin/ng-ts-codegen.js
@@ -12,7 +12,7 @@ const { exec } = require('child_process');
 const { resolve } = require('path');
 const url = require('url');
 
-const openApiVersion = '3.3.4';
+const openApiVersion = '4.1.3';
 const jarFileName = `openapi-generator-cli-${openApiVersion}.jar`;
 const dockerImageName = `openapitools/openapi-generator-cli:v${openApiVersion}`;
 
diff --git a/bin/openapi-generator-cli-3.3.4.jar.sha1 b/bin/openapi-generator-cli-3.3.4.jar.sha1
deleted file mode 100644
index c03f642..0000000
--- a/bin/openapi-generator-cli-3.3.4.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-34c0bc3d6081d3bdbf946f6ac8d0213181642b98 openapi-generator-cli-3.3.4.jar
diff --git a/bin/openapi-generator-cli-3.3.4.jar b/bin/openapi-generator-cli-4.1.3.jar
similarity index 74%
rename from bin/openapi-generator-cli-3.3.4.jar
rename to bin/openapi-generator-cli-4.1.3.jar
index 5d47369..feea968 100644
Binary files a/bin/openapi-generator-cli-3.3.4.jar and b/bin/openapi-generator-cli-4.1.3.jar differ
diff --git a/bin/openapi-generator-cli-4.1.3.jar.sha1 b/bin/openapi-generator-cli-4.1.3.jar.sha1
new file mode 100644
index 0000000..16ff751
--- /dev/null
+++ b/bin/openapi-generator-cli-4.1.3.jar.sha1
@@ -0,0 +1 @@
+d58e2f0a6af82f345842bf3db310de0dc9fbaa97
\ No newline at end of file