diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3090fc2fed9..6383f424529 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -57,6 +57,7 @@
 
 ### Fixed
 
+- OPDS, KOReader sync and other secure web requests keep their 2 KB read buffer on the heap instead of the calling task's stack, leaving more stack headroom while a catalog page is parsed.
 - On the X4 Pro, the e-ink panel is powered off before every restart (after an OTA or SD card update, or a silent restart when leaving Wi-Fi) instead of staying powered until the reset.
 - File Transfer choices no longer appear preselected when opened on a touch device.
 - On the X4 Pro and Sticky, the Home screen no longer stalls waiting for the SD card while the Library indexes in the background.
diff --git a/freeink-sdk b/freeink-sdk
index 838622edfd0..c5919cf86b7 160000
--- a/freeink-sdk
+++ b/freeink-sdk
@@ -1 +1 @@
-Subproject commit 838622edfd0393e36a791c01da41f01dfdfb0080
+Subproject commit c5919cf86b754eddff212b723ec0b39843de3544