diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1433971211b8bf5ff082c8db5debb32bf7533582..0f5594a8e20c555bca6edf82d4f17a05e842fcad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Python Buildpack Changelog
 
+## v77 (2016-02-10)
+
+Improvements to warnings and minor bugfix.
+
 ## v76 (2016-02-08)
 
 Improved Django collectstatic support.
diff --git a/bin/compile b/bin/compile
index c034b72d07483a8b027e1cf53caddc7ebd812312..e8050d41d78191ade5da3bc3ff068723fbecb235 100755
--- a/bin/compile
+++ b/bin/compile
@@ -39,7 +39,7 @@ SETUPTOOLS_VERSION="19.6"
 
 # Common Problem Warnings
 export WARNINGS_LOG=$(mktemp)
-export DEFAULT_PYTHON_VERSION
+export RECOMMENDED_PYTHON_VERSION=$DEFAULT_PYTHON_VERSION
 
 # Setup bpwatch
 export PATH=$PATH:$ROOT_DIR/vendor/bpwatch
@@ -57,8 +57,8 @@ export PATH=$PATH:$ROOT_DIR/vendor/pip-pop
 
 # Sanitizing environment variables.
 unset GIT_DIR PYTHONHOME PYTHONPATH LD_LIBRARY_PATH LIBRARY_PATH
-unset RECEIVE_DATA SOURCE_VERSION RUN_KEY BUILD_INFO DEPLOY
-unset LOG_TOKEN DYNO CYTOKINE_LOG_FILE GEM_PATH
+unset RECEIVE_DATA RUN_KEY BUILD_INFO DEPLOY LOG_TOKEN DYNO
+unset CYTOKINE_LOG_FILE GEM_PATH
 
 # Setup buildpack instrumentation.
 bpwatch init $LOGPLEX_KEY
diff --git a/bin/warnings b/bin/warnings
index fef69df283a60250f6923d244f9b12032aafc1f5..3ec061bba522853f0e0a949274fcb1c71875f9c7 100755
--- a/bin/warnings
+++ b/bin/warnings
@@ -5,7 +5,7 @@ old-platform() {
     echo
     puts-warn "Hello! It looks like your application is using an outdated version of Python."
     puts-warn "This caused the security warning you saw above during the 'pip install' step."
-    puts-warn "We recommend '$DEFAULT_PYTHON_VERSION', which you can specify in a 'runtime.txt' file."
+    puts-warn "We recommend '$RECOMMENDED_PYTHON_VERSION', which you can specify in a 'runtime.txt' file."
     puts-warn "  -- Much Love, Heroku."
   fi
 }