diff --git a/CHANGELOG.md b/CHANGELOG.md
index 39c971d..b369391 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 # Change Log
 All notable changes to the project software and documentation will be documented in this file.
 
+## [3.2.1] - 2024-01-04
+### Fixed
+- Wiring table for ESP8266 in README.md had incorrect SCL and SDA pin identification (D and GPIO numbers).
+
 ## [3.2.0] - 2023-11-19
 ### Added
 - Support for Raspberry Pi Pico (W)
diff --git a/README.md b/README.md
index 7cdb4e6..1a4e33e 100644
--- a/README.md
+++ b/README.md
@@ -231,8 +231,8 @@ Note that steps 1 and 2 are already complete if you have used Arduino IDE before
 |        VDD      |       3V3            |
 |        GND      |       GND            | 
 |        VPU      |       3V3            | 
-|        SCL      |    D2 (GPIO 4)       |
-|        SDA      |    D1 (GPIO 5)       |
+|        SCL      |    D1 (GPIO 5)       |
+|        SDA      |    D2 (GPIO 4)       |
 |        LIT      |    D3 (GPIO 0)       |
 |        SIT      |    D5 (GPIO 14)      |
 |        RDY      |    D6 (GPIO 12)      |