diff --git a/Dockerfile b/Dockerfile
index 7f0f2b3..8d69170 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -24,14 +24,11 @@ RUN mix local.hex --force && mix local.rebar --force
 # Set build environment
 ENV MIX_ENV="prod"
 
-# Capture APRS parser git hash from GitHub API during build
-RUN curl -s https://api.github.com/repos/aprsme/aprs/commits/main | grep -o '"sha":"[^\"]*"' | head -1 | cut -d'"' -f4 | cut -c1-7 > /tmp/parser_hash.txt
-
 # Install dependencies
 COPY mix.exs mix.lock ./
-# Extract the hash from mix.lock and write to a file
-RUN grep -oE 'aprs.*ref,\\s*"([a-f0-9]+)"' mix.lock | grep -oE '[a-f0-9]{7,}' | head -1 > /tmp/aprs_hash.txt
 RUN mix deps.get --only $MIX_ENV
+# Extract the APRS parser hash from the fetched GitHub dependency
+RUN cd deps/aprs && git rev-parse HEAD | cut -c1-7 > /tmp/aprs_hash.txt
 RUN mix deps.compile
 
 # Copy application code
@@ -66,16 +63,11 @@ RUN mkdir -p /app
 # Set deployment timestamp to current time during runtime container build
 RUN date -u +"%Y-%m-%dT%H:%M:%SZ" > /app/deployed_at.txt
 
-# Copy parser hash from builder stage
-COPY --from=builder /tmp/parser_hash.txt /app/parser_hash.txt
-
-# Set parser git hash environment variable for runtime
-RUN PARSER_HASH=$(cat /app/parser_hash.txt) && echo "PARSER_GIT_HASH=$PARSER_HASH" >> /etc/environment
-
-# In the runtime stage, after WORKDIR /app
+# Copy APRS parser hash from builder stage
 COPY --from=builder /tmp/aprs_hash.txt /app/aprs_hash.txt
-RUN echo "APRS_PARSER_HASH=$(cat /app/aprs_hash.txt)" >> /etc/environment
-ENV APRS_PARSER_HASH="unknown"
+
+# Set APRS parser hash environment variable for runtime
+RUN APRS_HASH=$(cat /app/aprs_hash.txt) && echo "APRS_PARSER_HASH=$APRS_HASH" >> /etc/environment
 
 # Copy release from builder
 COPY --from=builder --chown=nobody:root /app/release ./
diff --git a/lib/aprsme/dependency_info.ex b/lib/aprsme/dependency_info.ex
index 797402f..e9a8cfc 100644
--- a/lib/aprsme/dependency_info.ex
+++ b/lib/aprsme/dependency_info.ex
@@ -3,44 +3,18 @@ defmodule Aprsme.DependencyInfo do
   Provides information about dependencies, particularly for production builds.
   """
 
-  @aprs_hash (
-               mix_lock_path = Path.join([File.cwd!(), "mix.lock"])
-
-               if File.exists?(mix_lock_path) do
-                 case File.read(mix_lock_path) do
-                   {:ok, content} ->
-                     case Regex.run(
-                            ~r/aprs:\s*\{:git,\s*"https:\/\/github\.com\/aprsme\/aprs",\s*\{:ref,\s*"([a-f0-9]+)"\}/,
-                            content
-                          ) do
-                       [_, hash] ->
-                         String.slice(hash, 0, 7)
-
-                       _ ->
-                         case Regex.run(
-                                ~r/aprs:\s*\{:git,\s*"https:\/\/github\.com\/aprsme\/aprs",\s*"([a-f0-9]+)"\}/,
-                                content
-                              ) do
-                           [_, hash] -> String.slice(hash, 0, 7)
-                           _ -> "unknown"
-                         end
-                     end
-
-                   _ ->
-                     "unknown"
-                 end
-               else
-                 "unknown"
-               end
-             )
-
   @doc """
   Gets the SHA1 hash of the aprs library currently being used.
   In development: reads from vendor/aprs directory
   In production: uses the hash captured at compile time
   """
   def get_aprs_library_sha do
-    System.get_env("APRS_PARSER_HASH") || "unknown"
+    # First try environment variable (production)
+    case System.get_env("APRS_PARSER_HASH") do
+      nil -> get_aprs_sha_from_vendor()
+      "unknown" -> get_aprs_sha_from_vendor()
+      hash -> hash
+    end
   end
 
   defp get_aprs_sha_from_vendor do