diff --git a/bin/default_pythons b/bin/default_pythons
index 2fe4e10..96d1303 100755
--- a/bin/default_pythons
+++ b/bin/default_pythons
@@ -12,5 +12,5 @@ LATEST_36="python-3.6.11"
 LATEST_35="python-3.5.9"
 LATEST_34="python-3.4.10"
 LATEST_27="python-2.7.18"
-PYPY_36="pypy3.6-7.3.1"
-PYPY_27="pypy2.7-7.3.1"
+LATEST_PYPY_36="pypy3.6-7.3.1"
+LATEST_PYPY_27="pypy2.7-7.3.1"
diff --git a/bin/steps/python b/bin/steps/python
index 748bf75..7f53b74 100755
--- a/bin/steps/python
+++ b/bin/steps/python
@@ -64,15 +64,15 @@ if curl --output /dev/null --silent --head --fail "$VENDORED_PYTHON"; then
   fi
   if [[ "$PYTHON_VERSION" == $PYPY27* ]]; then
     # security update note
-    if [ "$PYTHON_VERSION" != "$PYPY_27" ]; then
-      puts-warn "$SECURITY_UPDATE_PYPY" "$PYPY_27"
+    if [ "$PYTHON_VERSION" != "$LATEST_PYPY_27" ]; then
+      puts-warn "$SECURITY_UPDATE_PYPY" "$LATEST_PYPY_27"
       echo "       Learn More: https://devcenter.heroku.com/articles/python-runtimes"
     fi
   fi
   if [[ "$PYTHON_VERSION" == $PYPY36* ]]; then
     # security update note
-    if [ "$PYTHON_VERSION" != "$PYPY_36" ]; then
-      puts-warn "$SECURITY_UPDATE_PYPY" "$PYPY_36"
+    if [ "$PYTHON_VERSION" != "$LATEST_PYPY_36" ]; then
+      puts-warn "$SECURITY_UPDATE_PYPY" "$LATEST_PYPY_36"
       echo "       Learn More: https://devcenter.heroku.com/articles/python-runtimes"
     fi
   fi
diff --git a/test/run-versions b/test/run-versions
index 0f76a87..32cfe52 100755
--- a/test/run-versions
+++ b/test/run-versions
@@ -199,7 +199,7 @@ testPypy3_6() {
   compile "pypy3_6"
   assertCaptured "Installing pypy"
   assertNotCaptured "security update"
-  assertCaptured "$PYPY_36"
+  assertCaptured "$LATEST_PYPY_36"
   assertCaptured "Installing pip 20.1.1, setuptools 47.1.1 and wheel 0.34.2"
   assertCapturedSuccess
 }
@@ -211,7 +211,7 @@ testPypy3_6_warn() {
   else
     assertCaptured "Installing pypy"
     assertCaptured "security update!"
-    assertCaptured "$PYPY_36"
+    assertCaptured "$LATEST_PYPY_36"
     assertCapturedSuccess
   fi
 }
@@ -220,7 +220,7 @@ testPypy2_7() {
   compile "pypy2_7"
   assertCaptured "Installing pypy"
   assertNotCaptured "security update"
-  assertCaptured "$PYPY_27"
+  assertCaptured "$LATEST_PYPY_27"
   assertCaptured "Installing pip 20.1.1, setuptools 44.1.1 and wheel 0.34.2"
   assertCapturedSuccess
 }
@@ -232,7 +232,7 @@ testPypy2_7_warn() {
   else
     assertCaptured "Installing pypy"
     assertCaptured "security update!"
-    assertCaptured "$PYPY_27"
+    assertCaptured "$LATEST_PYPY_27"
     assertCapturedSuccess
   fi
 }