diff --git a/.github/workflows/pullrequest.yml b/.github/workflows/pullrequest.yml
index 51d62680..4e705114 100644
--- a/.github/workflows/pullrequest.yml
+++ b/.github/workflows/pullrequest.yml
@@ -27,7 +27,7 @@ jobs:
           cache: maven
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@9e4932e2919d7a061a0cb982d1f9d841120ea6df
+        uses: github/codeql-action/init@2160dd3b55fb3a72bfc85e989cad8aa785d2e8d5
         with:
           languages: java
 
@@ -52,4 +52,4 @@ jobs:
           verbose: true # optional (default = false)
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@9e4932e2919d7a061a0cb982d1f9d841120ea6df
+        uses: github/codeql-action/analyze@2160dd3b55fb3a72bfc85e989cad8aa785d2e8d5
diff --git a/.github/workflows/static-code-scanning.yaml b/.github/workflows/static-code-scanning.yaml
index a6f3761f..00f33d2b 100644
--- a/.github/workflows/static-code-scanning.yaml
+++ b/.github/workflows/static-code-scanning.yaml
@@ -33,12 +33,12 @@ jobs:
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@9e4932e2919d7a061a0cb982d1f9d841120ea6df
+        uses: github/codeql-action/init@2160dd3b55fb3a72bfc85e989cad8aa785d2e8d5
         with:
           languages: java
 
       - name: Autobuild
-        uses: github/codeql-action/autobuild@9e4932e2919d7a061a0cb982d1f9d841120ea6df
+        uses: github/codeql-action/autobuild@2160dd3b55fb3a72bfc85e989cad8aa785d2e8d5
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@9e4932e2919d7a061a0cb982d1f9d841120ea6df
+        uses: github/codeql-action/analyze@2160dd3b55fb3a72bfc85e989cad8aa785d2e8d5
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 9b090798..54824065 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1 +1 @@
-{".":"1.4.2"}
\ No newline at end of file
+{".":"1.4.3"}
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5d0238b..0ed96d88 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## [1.4.3](https://github.com/open-feature/java-sdk/compare/v1.4.2...v1.4.3) (2023-08-11)
+
+
+### 🐛 Bug Fixes
+
+* ability to set provider after shutdown ([#556](https://github.com/open-feature/java-sdk/issues/556)) ([fb42a92](https://github.com/open-feature/java-sdk/commit/fb42a92e9b36e57ba71bc05a4f52eda88729f21e))
+
+
+### 🧹 Chore
+
+* **deps:** update github/codeql-action digest to 2160dd3 ([#555](https://github.com/open-feature/java-sdk/issues/555)) ([a6eabc3](https://github.com/open-feature/java-sdk/commit/a6eabc391de27b9dff16310d942abff8675b924e))
+* **deps:** update github/codeql-action digest to 2ec74e3 ([#553](https://github.com/open-feature/java-sdk/issues/553)) ([d8c64d9](https://github.com/open-feature/java-sdk/commit/d8c64d91c43b62af383c1ae6e09417da480c92d2))
+
 ## [1.4.2](https://github.com/open-feature/java-sdk/compare/v1.4.1...v1.4.2) (2023-08-10)
 
 
diff --git a/README.md b/README.md
index 3a48562a..b453b426 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ Note that this library is intended to be used in server-side contexts and has no
 <dependency>
     <groupId>dev.openfeature</groupId>
     <artifactId>sdk</artifactId>
-    <version>1.4.2</version>
+    <version>1.4.3</version>
 </dependency>
 ```
 <!-- x-release-please-end-version -->
@@ -67,7 +67,7 @@ If you would like snapshot builds, this is the relevant repository information:
 <!-- x-release-please-start-version -->
 ```groovy
 dependencies {
-    implementation 'dev.openfeature:sdk:1.4.2'
+    implementation 'dev.openfeature:sdk:1.4.3'
 }
 ```
 <!-- x-release-please-end-version -->
diff --git a/pom.xml b/pom.xml
index 79d142df..098d6eb0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
   <groupId>dev.openfeature</groupId>
   <artifactId>sdk</artifactId>
-  <version>1.4.2</version> <!--x-release-please-version -->
+  <version>1.4.3</version> <!--x-release-please-version -->
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
diff --git a/src/main/java/dev/openfeature/sdk/EventSupport.java b/src/main/java/dev/openfeature/sdk/EventSupport.java
index 3a55f298..7620c3f8 100644
--- a/src/main/java/dev/openfeature/sdk/EventSupport.java
+++ b/src/main/java/dev/openfeature/sdk/EventSupport.java
@@ -145,7 +145,11 @@ public void runHandler(Consumer<EventDetails> handler, EventDetails eventDetails
      * Stop the event handler task executor.
      */
     public void shutdown() {
-        taskExecutor.shutdown();
+        try {
+            taskExecutor.shutdown();
+        } catch (Exception e) {
+            log.warn("Exception while attempting to shutdown task executor", e);
+        }
     }
 
     // Handler store maintains a set of handlers for each event type.
diff --git a/src/main/java/dev/openfeature/sdk/OpenFeatureAPI.java b/src/main/java/dev/openfeature/sdk/OpenFeatureAPI.java
index 42ff4708..94047b8c 100644
--- a/src/main/java/dev/openfeature/sdk/OpenFeatureAPI.java
+++ b/src/main/java/dev/openfeature/sdk/OpenFeatureAPI.java
@@ -21,13 +21,15 @@
 public class OpenFeatureAPI implements EventBus<OpenFeatureAPI> {
     // package-private multi-read/single-write lock
     static AutoCloseableReentrantReadWriteLock lock = new AutoCloseableReentrantReadWriteLock();
-    private EvaluationContext evaluationContext;
     private final List<Hook> apiHooks;
-    private ProviderRepository providerRepository = new ProviderRepository();
-    private EventSupport eventSupport = new EventSupport();
+    private ProviderRepository providerRepository;
+    private EventSupport eventSupport;
+    private EvaluationContext evaluationContext;
 
     protected OpenFeatureAPI() {
         apiHooks = new ArrayList<>();
+        providerRepository = new ProviderRepository();
+        eventSupport = new EventSupport();
     }
 
     private static class SingletonHolder {
@@ -190,9 +192,19 @@ public void clearHooks() {
         }
     }
 
+    /**
+     * Shut down and reset the current status of OpenFeature API.
+     * This call cleans up all active providers and attempts to shut down internal event handling mechanisms.
+     * Once shut down is complete, API is reset and ready to use again.
+     * */
     public void shutdown() {
-        providerRepository.shutdown();
-        eventSupport.shutdown();
+        try (AutoCloseableLock __ = lock.writeLockAutoCloseable()) {
+            providerRepository.shutdown();
+            eventSupport.shutdown();
+
+            providerRepository = new ProviderRepository();
+            eventSupport = new EventSupport();
+        }
     }
 
     /**
@@ -264,15 +276,6 @@ void addHandler(String clientName, ProviderEvent event, Consumer<EventDetails> h
         }
     }
 
-    /**
-     * This method is only here for testing as otherwise all tests after the API
-     * shutdown test would fail.
-     */
-    final void reset() {
-        providerRepository = new ProviderRepository();
-        eventSupport = new EventSupport();
-    }
-
     /**
      * Runs the handlers associated with a particular provider.
      * 
diff --git a/src/test/java/dev/openfeature/sdk/ShutdownBehaviorSpecTest.java b/src/test/java/dev/openfeature/sdk/ShutdownBehaviorSpecTest.java
index e470819f..8659ce78 100644
--- a/src/test/java/dev/openfeature/sdk/ShutdownBehaviorSpecTest.java
+++ b/src/test/java/dev/openfeature/sdk/ShutdownBehaviorSpecTest.java
@@ -109,9 +109,22 @@ void mustShutdownAllProvidersOnShuttingDownApi() {
                             verify(defaultProvider).shutdown();
                             verify(namedProvider).shutdown();
                         });
-
-                api.reset();
             }
         }
+
+
+        @Test
+        @DisplayName("once shutdown is complete, api must be ready to use again")
+        void apiIsReadyToUseAfterShutdown() {
+            final OpenFeatureAPI openFeatureAPI = OpenFeatureAPI.getInstance();
+
+            NoOpProvider p1 = new NoOpProvider();
+            openFeatureAPI.setProvider(p1);
+
+            openFeatureAPI.shutdown();
+
+            NoOpProvider p2 = new NoOpProvider();
+            openFeatureAPI.setProvider(p2);
+        }
     }
 }
diff --git a/version.txt b/version.txt
index 9df886c4..428b770e 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-1.4.2
+1.4.3