diff --git a/.gitignore b/.gitignore
index 2b2762b..9451935 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 TODO
 Release/*.hex
 Release/*.zip
+Release/*.json
diff --git a/Makefile b/Makefile
index 09a3385..5f6eb41 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,6 @@
-prep:
+prep: prep-avr prep-esp32 prep-samd
+
+prep-avr:
 	arduino-cli core update-index --config-file arduino-cli.yaml
 	arduino-cli core install arduino:avr
 	arduino-cli core install unsignedio:avr
@@ -8,6 +10,7 @@ prep-esp32:
 	arduino-cli core install esp32:esp32
 	arduino-cli lib install "Adafruit SSD1306"
 	arduino-cli lib install "AXP202X_Library"
+	arduino-cli lib install "Crypto"
 
 prep-samd:
 	arduino-cli core update-index --config-file arduino-cli.yaml
@@ -86,7 +89,10 @@ upload-mega2560:
 
 release: release-all
 
-release-all: release-rnode release-mega2560 release-tbeam release-lora32_v20 release-lora32_v21 release-lora32_v20_extled release-lora32_v21_extled release-featheresp32 release-genericesp32 release-heltec32_v2 release-heltec32_v2_extled release-rnode_ng_20 release-rnode_ng_21
+release-all: release-rnode release-mega2560 release-tbeam release-lora32_v20 release-lora32_v21 release-lora32_v20_extled release-lora32_v21_extled release-featheresp32 release-genericesp32 release-heltec32_v2 release-heltec32_v2_extled release-rnode_ng_20 release-rnode_ng_21 release-hashes
+
+release-hashes:
+	python ./release_hashes.py > ./Release/release.json
 
 release-rnode:
 	arduino-cli compile --fqbn unsignedio:avr:rnode -e
diff --git a/release_hashes.py b/release_hashes.py
new file mode 100644
index 0000000..282dae6
--- /dev/null
+++ b/release_hashes.py
@@ -0,0 +1,33 @@
+import os
+import json
+import hashlib
+
+major_version = None
+minor_version = None
+target_version = None
+
+file = open("Config.h", "rb")
+config_data = file.read().splitlines()
+for line in config_data:
+    dline = line.decode("utf-8").strip()
+    components = dline.split()
+    if dline.startswith("#define MAJ_VERS"):
+        major_version = "%01d" % ord(bytes.fromhex(dline.split()[2].split("x")[1]))
+    if dline.startswith("#define MIN_VERS"):
+        minor_version = "%02d" % ord(bytes.fromhex(dline.split()[2].split("x")[1]))
+
+target_version = major_version+"."+minor_version
+
+release_hashes = {}
+target_dir = "./Release"
+files = os.listdir(target_dir)
+for filename in files:
+    if os.path.isfile(os.path.join(target_dir, filename)):
+        if filename.startswith("rnode_firmware"):
+            file = open(os.path.join(target_dir, filename), "rb")
+            release_hashes[filename] = {
+                "hash": hashlib.sha256(file.read()).hexdigest(),
+                "version": target_version
+            }
+
+print(json.dumps(release_hashes))
\ No newline at end of file