diff --git a/esphome/cpp_generator.py b/esphome/cpp_generator.py
index 83f2d6cf81..fe666bdd6e 100644
--- a/esphome/cpp_generator.py
+++ b/esphome/cpp_generator.py
@@ -424,7 +424,7 @@ class ProgmemAssignmentExpression(AssignmentExpression):
         super().__init__(type_, "", name, rhs)
 
     def __str__(self):
-        return f"static const {self.type} {self.name}[] PROGMEM = {self.rhs}"
+        return f"static constexpr {self.type} {self.name}[] PROGMEM = {self.rhs}"
 
 
 class StaticConstAssignmentExpression(AssignmentExpression):
diff --git a/tests/unit_tests/test_cpp_generator.py b/tests/unit_tests/test_cpp_generator.py
index 8755e6e2a1..049d21027f 100644
--- a/tests/unit_tests/test_cpp_generator.py
+++ b/tests/unit_tests/test_cpp_generator.py
@@ -325,7 +325,7 @@ class TestStatements:
             ),
             (
                 cg.ProgmemAssignmentExpression(ct.uint16, "foo", "bar"),
-                'static const uint16_t foo[] PROGMEM = "bar"',
+                'static constexpr uint16_t foo[] PROGMEM = "bar"',
             ),
         ),
     )