diff --git a/platformio.ini b/platformio.ini
index 2cbf3a0..c3fdbd8 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -280,9 +280,18 @@ lib_ignore =
 ; The GUI toolkit, this board only: the mono boards keep their page stack and
 ; never build it. lv_conf.h lives in src/ui/lvgl and reaches the library via
 ; LV_CONF_INCLUDE_SIMPLE plus the include path.
+;
+; Pinned to the 9.5 line (~, not ^) on all three LVGL boards. The fonts in
+; src/ui/lvgl/fonts are lv_font_conv output written against 9.5's lv_font_t,
+; and 9.6.0 (2026-09-16) changed that struct (it gained cap_height and
+; x_height): every font file then fails with "designator order for field
+; '_lv_font_t::dsc' does not match declaration order". A caret range let any
+; fresh resolve — CI included — take 9.6.0 and
+; break these builds with nothing in the repository changed. Moving to 9.6 is
+; regenerating the fonts and lifting this pin together.
 lib_deps =
     ${env.lib_deps}
-    lvgl/lvgl @ ^9.5.0
+    lvgl/lvgl @ ~9.5.0
 build_flags =
     ${env.build_flags}
     ${esp32s3_psram.build_flags}
@@ -403,9 +412,10 @@ board_build.partitions = partitions/ota_16mb.csv
 ; Unlike that board this one *has* a slot, so only the OLED driver goes.
 lib_ignore =
     Adafruit SSD1306
+; LVGL is pinned to the 9.5 line for the fonts' sake: see [env:heltec-v4].
 lib_deps =
     ${env.lib_deps}
-    lvgl/lvgl @ ^9.5.0
+    lvgl/lvgl @ ~9.5.0
 build_flags =
     ${env.build_flags}
     ${esp32s3_psram.build_flags}
@@ -469,7 +479,8 @@ lib_deps =
     Crypto=https://github.com/attermann/Crypto.git
     microStore=https://github.com/dobrevit/microStore.git#retimesh/combined
     hideakitai/MsgPack @ ^0.4.2
-    lvgl/lvgl @ ^9.5.0
+    ; LVGL pinned to 9.5 for the fonts' sake: see [env:heltec-v4]
+    lvgl/lvgl @ ~9.5.0
 build_flags =
     ${env.build_flags}
     ${esp32s3_psram.build_flags}