diff --git a/CHANGELOG.md b/CHANGELOG.md
index ef44a3c..22e4398 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [9.6.6] - 2026-09-14
+
+### Added:
+- We updated the httpclient5 dependency to 5.6.4
+
 ## [9.6.5] - 2026-08-06
 
 ### Added:
diff --git a/dist/UnitTesting_9.6.6.mpk b/dist/UnitTesting_9.6.6.mpk
new file mode 100644
index 0000000..b651fa5
Binary files /dev/null and b/dist/UnitTesting_9.6.6.mpk differ
diff --git a/pom.xml b/pom.xml
index b92dca9..108463d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>com.mendix.UnitTesting</groupId>
     <artifactId>UnitTesting</artifactId>
-    <version>9.6.5</version>
+    <version>9.6.6</version>
 
     <repositories>
         <repository>
@@ -30,7 +30,7 @@
         <dependency>
             <groupId>org.apache.httpcomponents.client5</groupId>
             <artifactId>httpclient5</artifactId>
-            <version>5.6.2</version>
+            <version>5.6.4</version>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
diff --git a/src/UnitTesting.mpr b/src/UnitTesting.mpr
index 515c6a2..86d6db6 100644
Binary files a/src/UnitTesting.mpr and b/src/UnitTesting.mpr differ
diff --git a/src/userlib/UnitTesting.migration b/src/userlib/UnitTesting.migration
index d178fce..3d8c13a 100644
--- a/src/userlib/UnitTesting.migration
+++ b/src/userlib/UnitTesting.migration
@@ -9,8 +9,8 @@ delete commons-lang3-3.18.0.jar
 delete commons-lang3-3.18.0.jar.UnitTesting.RequiredLib
 delete hamcrest-core-1.3.jar
 delete hamcrest-core-1.3.jar.UnitTesting.RequiredLib
-delete httpclient5-5.6.2.jar
-delete httpclient5-5.6.2.jar.UnitTesting.RequiredLib
+delete httpclient5-5.6.4.jar
+delete httpclient5-5.6.4.jar.UnitTesting.RequiredLib
 delete httpcore5-5.4.3.jar
 delete httpcore5-5.4.3.jar.UnitTesting.RequiredLib
 delete httpcore5-h2-5.4.3.jar
diff --git a/src/userlib/httpclient5-5.6.2.jar b/src/userlib/httpclient5-5.6.4.jar
similarity index 83%
rename from src/userlib/httpclient5-5.6.2.jar
rename to src/userlib/httpclient5-5.6.4.jar
index eb1d05e..d2fd8b9 100644
Binary files a/src/userlib/httpclient5-5.6.2.jar and b/src/userlib/httpclient5-5.6.4.jar differ
diff --git a/src/userlib/httpclient5-5.6.2.jar.UnitTesting.RequiredLib b/src/userlib/httpclient5-5.6.4.jar.UnitTesting.RequiredLib
similarity index 100%
rename from src/userlib/httpclient5-5.6.2.jar.UnitTesting.RequiredLib
rename to src/userlib/httpclient5-5.6.4.jar.UnitTesting.RequiredLib