diff --git a/src/main/java/org/gitlab4j/api/EnvironmentsApi.java b/src/main/java/org/gitlab4j/api/EnvironmentsApi.java
index 6eca51277f1413b31597a15a4097bb65d7a607aa..2816f18aed59597f047d5e10bd0969d53cb9703a 100644
--- a/src/main/java/org/gitlab4j/api/EnvironmentsApi.java
+++ b/src/main/java/org/gitlab4j/api/EnvironmentsApi.java
@@ -102,9 +102,27 @@ public class EnvironmentsApi extends AbstractApi {
      * @param externalUrl the place to link to for this environment
      * @return the created Environment instance
      * @throws GitLabApiException if any exception occurs
+     * @deprecated use {@link #createEnvironment(Object, String, String, String)} instead
      */
+    @Deprecated
     public Environment createEnvironment(Object projectIdOrPath, String name, String externalUrl) throws GitLabApiException {
-	GitLabApiForm formData = new GitLabApiForm().withParam("name", name, true).withParam("external_url", externalUrl);
+        return createEnvironment(projectIdOrPath, name, externalUrl, null);
+    }
+
+    /**
+     * Create a new environment with the given name, external_url and tier.
+     *
+     * <pre><code>GitLab Endpoint:POST /projects/:id/environments</code></pre>
+     *
+     * @param projectIdOrPath id, path of the project, or a Project instance holding the project ID or path
+     * @param name the name of the environment
+     * @param externalUrl the place to link to for this environment
+     * @param tier the tier of the environment
+     * @return the created Environment instance
+     * @throws GitLabApiException if any exception occurs
+     */
+    public Environment createEnvironment(Object projectIdOrPath, String name, String externalUrl, String tier) throws GitLabApiException {
+	GitLabApiForm formData = new GitLabApiForm().withParam("name", name, true).withParam("external_url", externalUrl).withParam("tier", tier);
 	Response response = post(Response.Status.CREATED, formData,
                 "projects", getProjectIdOrPath(projectIdOrPath), "environments");
 	return (response.readEntity(Environment.class));
@@ -121,9 +139,28 @@ public class EnvironmentsApi extends AbstractApi {
      * @param externalUrl the place to link to for this environment
      * @return the created Environment instance
      * @throws GitLabApiException if any exception occurs
+     * @deprecated use {@link #updateEnvironment(Object, Long, String, String, String)} instead
      */
+    @Deprecated
     public Environment updateEnvironment(Object projectIdOrPath, Long environmentId, String name, String externalUrl) throws GitLabApiException {
-	GitLabApiForm formData = new GitLabApiForm().withParam("name", name).withParam("external_url", externalUrl);
+        return updateEnvironment(projectIdOrPath, environmentId, name, externalUrl, null);
+    }
+
+    /**
+     * Update an existing environment.
+     *
+     * <pre><code>GitLab Endpoint:POST /projects/:id/environments</code></pre>
+     *
+     * @param projectIdOrPath id, path of the project, or a Project instance holding the project ID or path
+     * @param environmentId the ID of the environment to update
+     * @param name the name of the environment
+     * @param externalUrl the place to link to for this environment
+     * @param tier the tier of the environment
+     * @return the created Environment instance
+     * @throws GitLabApiException if any exception occurs
+     */
+    public Environment updateEnvironment(Object projectIdOrPath, Long environmentId, String name, String externalUrl, String tier) throws GitLabApiException {
+	GitLabApiForm formData = new GitLabApiForm().withParam("name", name).withParam("external_url", externalUrl).withParam("tier", tier);
 	Response response = putWithFormData(Response.Status.OK, formData, formData,
                 "projects", getProjectIdOrPath(projectIdOrPath), "environments", environmentId);
 	return (response.readEntity(Environment.class));
@@ -175,4 +212,4 @@ public class EnvironmentsApi extends AbstractApi {
                 "projects", getProjectIdOrPath(projectIdOrPath), "environments", environmentId, "stop");
 	return (response.readEntity(Environment.class));
     }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/org/gitlab4j/api/models/Environment.java b/src/main/java/org/gitlab4j/api/models/Environment.java
index 1a2ecb59655c7dfd663583e3f86766d56d4253dc..74a2985747bf8a3ef537a2d78091a2eb56ea2284 100644
--- a/src/main/java/org/gitlab4j/api/models/Environment.java
+++ b/src/main/java/org/gitlab4j/api/models/Environment.java
@@ -35,6 +35,7 @@ public class Environment implements Serializable {
     private String name;
     private String slug;
     private String externalUrl;
+    private String tier;
     private EnvironmentState state;
     private Deployment lastDeployment;
 
@@ -70,6 +71,14 @@ public class Environment implements Serializable {
 	this.externalUrl = externalUrl;
     }
 
+    public String getTier() {
+        return tier;
+    }
+
+    public void setTier(String tier) {
+        this.tier = tier;
+    }
+
     public EnvironmentState getState() {
 	return state;
     }
diff --git a/src/test/java/org/gitlab4j/api/TestEnvironmentsApi.java b/src/test/java/org/gitlab4j/api/TestEnvironmentsApi.java
index f94eb1921e4afc4c25efa4cdda72fba66553c2e4..a142eb02d7dadb4f41bdb7d4c5ba825cdab9d2be 100644
--- a/src/test/java/org/gitlab4j/api/TestEnvironmentsApi.java
+++ b/src/test/java/org/gitlab4j/api/TestEnvironmentsApi.java
@@ -38,6 +38,7 @@ public class TestEnvironmentsApi extends AbstractIntegrationTest {
 
     private static final String ENVIRONMENT_NAME = "gitlab4j-testing";
     private static final String EXTERNAL_URL = "https:/testing.example.com/";
+    private static final String TIER = "testing";
     private static Random randomNumberGenerator = new Random();
 
     public TestEnvironmentsApi() {
@@ -94,7 +95,7 @@ public class TestEnvironmentsApi extends AbstractIntegrationTest {
     public void testGetEnvironments() throws GitLabApiException {
 
 	final Environment env = gitLabApi.getEnvironmentsApi().createEnvironment(
-		testProject, getUniqueName(), EXTERNAL_URL);
+		testProject, getUniqueName(), EXTERNAL_URL, TIER);
 
 	List<Environment> envs = gitLabApi.getEnvironmentsApi().getEnvironments(testProject);
 	assertTrue(envs.size() > 0);
@@ -108,7 +109,7 @@ public class TestEnvironmentsApi extends AbstractIntegrationTest {
     public void testStopAndDeleteEnvironment() throws GitLabApiException {
 
 	final Environment env = gitLabApi.getEnvironmentsApi().createEnvironment(
-		testProject, getUniqueName(), EXTERNAL_URL);
+		testProject, getUniqueName(), EXTERNAL_URL, TIER);
 
 	gitLabApi.getEnvironmentsApi().stopEnvironment(testProject, env.getId());
 	gitLabApi.getEnvironmentsApi().deleteEnvironment(testProject, env.getId());
@@ -122,7 +123,7 @@ public class TestEnvironmentsApi extends AbstractIntegrationTest {
     public void testOptionalEnvironment() throws GitLabApiException {
 
 	final Environment env = gitLabApi.getEnvironmentsApi().createEnvironment(
-		testProject, getUniqueName(), EXTERNAL_URL);
+		testProject, getUniqueName(), EXTERNAL_URL, TIER);
 	Optional<Environment> optionalEnv =
 		gitLabApi.getEnvironmentsApi().getOptionalEnvironment(testProject, env.getId());
 	assertTrue(optionalEnv.isPresent());
diff --git a/src/test/resources/org/gitlab4j/api/environment.json b/src/test/resources/org/gitlab4j/api/environment.json
index 03a64d24c9a6cf3d3d5e5635f1af45df244db3b8..ff77773dac72515fe2edf7b3e1e4b242fc51a3de 100644
--- a/src/test/resources/org/gitlab4j/api/environment.json
+++ b/src/test/resources/org/gitlab4j/api/environment.json
@@ -4,6 +4,7 @@
   "slug": "review-fix-foo-dfjre3",
   "external_url": "https://review-fix-foo-dfjre3.example.gitlab.com",
   "state": "available",
+  "tier": "testing",
   "last_deployment": {
     "id": 100,
     "iid": 34,
@@ -78,4 +79,4 @@
       ]
     }
   }
-}
\ No newline at end of file
+}