diff --git a/esphome/components/time/posix_tz.cpp b/esphome/components/time/posix_tz.cpp
index a03ad9a119f..f878af51189 100644
--- a/esphome/components/time/posix_tz.cpp
+++ b/esphome/components/time/posix_tz.cpp
@@ -1,7 +1,7 @@
 #include "posix_tz.h"
 #include <cctype>
 
-namespace esphome {
+namespace esphome::time {
 
 namespace internal {
 
@@ -406,4 +406,4 @@ bool epoch_to_local_tm(time_t utc_epoch, const ParsedTimezone &tz, struct tm *ou
   return true;
 }
 
-}  // namespace esphome
+}  // namespace esphome::time
diff --git a/esphome/components/time/posix_tz.h b/esphome/components/time/posix_tz.h
index 6c22b6e1da5..8ab577dd83b 100644
--- a/esphome/components/time/posix_tz.h
+++ b/esphome/components/time/posix_tz.h
@@ -3,7 +3,7 @@
 #include <cstdint>
 #include <ctime>
 
-namespace esphome {
+namespace esphome::time {
 
 /// Type of DST transition rule
 enum class DSTRuleType : uint8_t {
@@ -114,4 +114,4 @@ void epoch_to_tm_utc(time_t epoch, struct tm *out_tm);
 
 }  // namespace internal
 
-}  // namespace esphome
+}  // namespace esphome::time