diff --git a/CHANGELOG.md b/CHANGELOG.md
index e9138d3..98e2f6f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,28 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
+## 1.5.1 - 2021-12-24
+
+### Added
+
+- Nothing.
+
+### Changed
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- [#100](https://github.com/scoutapp/scout-apm-php-ext/pull/100) Fix json_encode usage where ext-json is shared or does not exist - thanks @remicollet
+
 ## 1.5.0 - 2021-12-23
 
 ### Added
diff --git a/package.xml b/package.xml
index 203035c..fabd32b 100644
--- a/package.xml
+++ b/package.xml
@@ -25,11 +25,11 @@
     </lead>
 
     <!-- Current Release -->
-    <date>2021-12-23</date>
-    <time>09:00:00</time>
+    <date>2021-12-24</date>
+    <time>14:00:00</time>
     <version>
-        <release>1.5.0</release>
-        <api>1.5.0</api>
+        <release>1.5.1</release>
+        <api>1.5.1</api>
     </version>
     <stability>
         <release>stable</release>
@@ -37,7 +37,7 @@
     </stability>
     <license uri="https://opensource.org/licenses/MIT">MIT</license>
     <notes>
-        - file_get_contents and curl_exec now record HTTP methods (#96)
+        - Fix json_encode usage where ext-json is shared or does not exist - thanks @remicollet (#100)
     </notes>
     <!-- End Current Release -->
 
@@ -114,6 +114,22 @@
     <zendextsrcrelease />
 
     <changelog>
+        <release>
+            <date>2021-12-23</date>
+            <time>09:00:00</time>
+            <version>
+                <release>1.5.0</release>
+                <api>1.5.0</api>
+            </version>
+            <stability>
+                <release>stable</release>
+                <api>stable</api>
+            </stability>
+            <license uri="https://opensource.org/licenses/MIT">MIT</license>
+            <notes>
+                - file_get_contents and curl_exec now record HTTP methods (#96)
+            </notes>
+        </release>
         <release>
             <date>2021-10-29</date>
             <time>09:00:00</time>
diff --git a/zend_scoutapm.h b/zend_scoutapm.h
index f92be4e..014a389 100644
--- a/zend_scoutapm.h
+++ b/zend_scoutapm.h
@@ -21,7 +21,7 @@
 #include "scout_execute_ex.h"
 
 #define PHP_SCOUTAPM_NAME "scoutapm"
-#define PHP_SCOUTAPM_VERSION "1.5.0"
+#define PHP_SCOUTAPM_VERSION "1.5.1"
 
 /* Extreme amounts of debugging, set to 1 to enable it and `make clean && make` (tests will fail...) */
 #define SCOUT_APM_EXT_DEBUGGING 0