diff --git a/esphome/components/sha256/sha256.cpp b/esphome/components/sha256/sha256.cpp
index a0f82b78ef..699579251e 100644
--- a/esphome/components/sha256/sha256.cpp
+++ b/esphome/components/sha256/sha256.cpp
@@ -8,8 +8,7 @@
 #include <SHA256.h>
 #endif
 
-namespace esphome {
-namespace sha256 {
+namespace esphome::sha256 {
 
 #ifdef USE_ESP32
 struct SHA256::SHA256Context {
@@ -127,5 +126,4 @@ bool SHA256::equals_hex(const char *expected) {
   return this->equals_bytes(parsed);
 }
 
-}  // namespace sha256
-}  // namespace esphome
+}  // namespace esphome::sha256
diff --git a/esphome/components/sha256/sha256.h b/esphome/components/sha256/sha256.h
index 4d94c5b77d..dd1742ea0d 100644
--- a/esphome/components/sha256/sha256.h
+++ b/esphome/components/sha256/sha256.h
@@ -5,8 +5,7 @@
 #include <string>
 #include <memory>
 
-namespace esphome {
-namespace sha256 {
+namespace esphome::sha256 {
 
 class SHA256 {
  public:
@@ -32,5 +31,4 @@ class SHA256 {
   std::unique_ptr<SHA256Context> ctx_;
 };
 
-}  // namespace sha256
-}  // namespace esphome
+}  // namespace esphome::sha256