diff --git a/deps/nghttp2/lib/Makefile.in b/deps/nghttp2/lib/Makefile.in
index 7c07e0c83a0fa6..24a6cc468ed773 100644
--- a/deps/nghttp2/lib/Makefile.in
+++ b/deps/nghttp2/lib/Makefile.in
@@ -356,8 +356,8 @@ LIBNGHTTP3_LIBS = @LIBNGHTTP3_LIBS@
 LIBNGTCP2_CFLAGS = @LIBNGTCP2_CFLAGS@
 LIBNGTCP2_CRYPTO_BORINGSSL_CFLAGS = @LIBNGTCP2_CRYPTO_BORINGSSL_CFLAGS@
 LIBNGTCP2_CRYPTO_BORINGSSL_LIBS = @LIBNGTCP2_CRYPTO_BORINGSSL_LIBS@
-LIBNGTCP2_CRYPTO_OPENSSL_CFLAGS = @LIBNGTCP2_CRYPTO_OPENSSL_CFLAGS@
-LIBNGTCP2_CRYPTO_OPENSSL_LIBS = @LIBNGTCP2_CRYPTO_OPENSSL_LIBS@
+LIBNGTCP2_CRYPTO_QUICTLS_CFLAGS = @LIBNGTCP2_CRYPTO_QUICTLS_CFLAGS@
+LIBNGTCP2_CRYPTO_QUICTLS_LIBS = @LIBNGTCP2_CRYPTO_QUICTLS_LIBS@
 LIBNGTCP2_LIBS = @LIBNGTCP2_LIBS@
 LIBOBJS = @LIBOBJS@
 LIBS = @LIBS@
diff --git a/deps/nghttp2/lib/includes/Makefile.in b/deps/nghttp2/lib/includes/Makefile.in
index 18b45672406fec..3de90d7bef3e3a 100644
--- a/deps/nghttp2/lib/includes/Makefile.in
+++ b/deps/nghttp2/lib/includes/Makefile.in
@@ -263,8 +263,8 @@ LIBNGHTTP3_LIBS = @LIBNGHTTP3_LIBS@
 LIBNGTCP2_CFLAGS = @LIBNGTCP2_CFLAGS@
 LIBNGTCP2_CRYPTO_BORINGSSL_CFLAGS = @LIBNGTCP2_CRYPTO_BORINGSSL_CFLAGS@
 LIBNGTCP2_CRYPTO_BORINGSSL_LIBS = @LIBNGTCP2_CRYPTO_BORINGSSL_LIBS@
-LIBNGTCP2_CRYPTO_OPENSSL_CFLAGS = @LIBNGTCP2_CRYPTO_OPENSSL_CFLAGS@
-LIBNGTCP2_CRYPTO_OPENSSL_LIBS = @LIBNGTCP2_CRYPTO_OPENSSL_LIBS@
+LIBNGTCP2_CRYPTO_QUICTLS_CFLAGS = @LIBNGTCP2_CRYPTO_QUICTLS_CFLAGS@
+LIBNGTCP2_CRYPTO_QUICTLS_LIBS = @LIBNGTCP2_CRYPTO_QUICTLS_LIBS@
 LIBNGTCP2_LIBS = @LIBNGTCP2_LIBS@
 LIBOBJS = @LIBOBJS@
 LIBS = @LIBS@
diff --git a/deps/nghttp2/lib/includes/nghttp2/nghttp2ver.h b/deps/nghttp2/lib/includes/nghttp2/nghttp2ver.h
index 46e7004be2c608..5dea3ffe100b40 100644
--- a/deps/nghttp2/lib/includes/nghttp2/nghttp2ver.h
+++ b/deps/nghttp2/lib/includes/nghttp2/nghttp2ver.h
@@ -29,7 +29,7 @@
  * @macro
  * Version number of the nghttp2 library release
  */
-#define NGHTTP2_VERSION "1.53.0"
+#define NGHTTP2_VERSION "1.55.0"
 
 /**
  * @macro
@@ -37,6 +37,6 @@
  * release. This is a 24 bit number with 8 bits for major number, 8 bits
  * for minor and 8 bits for patch. Version 1.2.3 becomes 0x010203.
  */
-#define NGHTTP2_VERSION_NUM 0x013500
+#define NGHTTP2_VERSION_NUM 0x013700
 
 #endif /* NGHTTP2VER_H */
diff --git a/doc/contributing/maintaining/maintaining-dependencies.md b/doc/contributing/maintaining/maintaining-dependencies.md
index 53880b3bdeebd2..dc281a3586d957 100644
--- a/doc/contributing/maintaining/maintaining-dependencies.md
+++ b/doc/contributing/maintaining/maintaining-dependencies.md
@@ -21,7 +21,7 @@ This a list of all the dependencies:
 * [libuv 1.46.0][]
 * [llhttp 8.1.0][]
 * [minimatch 9.0.2][]
-* [nghttp2 1.53.0][]
+* [nghttp2 1.55.0][]
 * [nghttp3 0.7.0][]
 * [ngtcp2 0.8.1][]
 * [npm 9.6.7][]
@@ -223,7 +223,7 @@ See [maintaining-http][] for more informations.
 The [minimatch](https://github.com/isaacs/minimatch) dependency is a
 minimal matching utility.
 
-### nghttp2 1.53.0
+### nghttp2 1.55.0
 
 The [nghttp2](https://github.com/nghttp2/nghttp2) dependency is a C library
 implementing HTTP/2 protocol.
@@ -338,7 +338,7 @@ performance improvements not currently available in standard zlib.
 [maintaining-openssl]: ./maintaining-openssl.md
 [maintaining-web-assembly]: ./maintaining-web-assembly.md
 [minimatch 9.0.2]: #minimatch-902
-[nghttp2 1.53.0]: #nghttp2-1530
+[nghttp2 1.55.0]: #nghttp2-1550
 [nghttp3 0.7.0]: #nghttp3-070
 [ngtcp2 0.8.1]: #ngtcp2-081
 [npm 9.6.7]: #npm-967