diff --git a/src/analyzer/protocol/icmp/ICMP.h b/src/analyzer/protocol/icmp/ICMP.h
deleted file mode 100644
index 3ee6659230..0000000000
--- a/src/analyzer/protocol/icmp/ICMP.h
+++ /dev/null
@@ -1,20 +0,0 @@
-#warning                                                                                           \
-	"Remove in v5.1. This analyzer has been moved to packet analysis, use 'zeek/packet_analysis/protocol/icmp/ICMPSessionAdapter.h' and/or 'zeek/packet_analysis/protocol/icmp/ICMP.h'."
-
-#include "zeek/packet_analysis/protocol/icmp/ICMP.h"
-#include "zeek/packet_analysis/protocol/icmp/ICMPSessionAdapter.h"
-
-namespace zeek::analyzer::icmp
-	{
-
-using ICMP_Analyzer
-	[[deprecated("Remove in v5.1. Use zeek::packet_analysis::ICMP::ICMPSessionAdapter.")]] =
-		zeek::packet_analysis::ICMP::ICMPSessionAdapter;
-constexpr auto ICMP4_counterpart
-	[[deprecated("Remove in v5.1. Use zeek::packet_analysis::ICMP::ICMP4_counterpart.")]] =
-		zeek::packet_analysis::ICMP::ICMP4_counterpart;
-constexpr auto ICMP6_counterpart
-	[[deprecated("Remove in v5.1. Use zeek::packet_analysis::ICMP::ICMP6_counterpart.")]] =
-		zeek::packet_analysis::ICMP::ICMP6_counterpart;
-
-	} // namespace zeek::analyzer::icmp
diff --git a/src/analyzer/protocol/tcp/TCP.h b/src/analyzer/protocol/tcp/TCP.h
index 3b145cb789..0844fb87a9 100644
--- a/src/analyzer/protocol/tcp/TCP.h
+++ b/src/analyzer/protocol/tcp/TCP.h
@@ -21,10 +21,6 @@ class TCP_Endpoint;
 class TCP_Reassembler;
 class TCP_ApplicationAnalyzer;
 
-using TCP_Analyzer
-	[[deprecated("Remove in v5.1. Use zeek::packet_analysis::TCP::TCPSessionAdapter.")]] =
-		packet_analysis::TCP::TCPSessionAdapter;
-
 /**
  * An abstract base class for analyzers for a protocol running on top
  * of TCP.
diff --git a/src/analyzer/protocol/tcp/TCP_Endpoint.h b/src/analyzer/protocol/tcp/TCP_Endpoint.h
index 05dbdcda15..d885be3899 100644
--- a/src/analyzer/protocol/tcp/TCP_Endpoint.h
+++ b/src/analyzer/protocol/tcp/TCP_Endpoint.h
@@ -19,10 +19,6 @@ class TCPSessionAdapter;
 namespace analyzer::tcp
 	{
 
-using TCP_Analyzer
-	[[deprecated("Remove in v5.1. Use zeek::packet_analysis::TCP::TCPSessionAdapter.")]] =
-		zeek::packet_analysis::TCP::TCPSessionAdapter;
-
 class TCP_Reassembler;
 
 enum EndpointState
diff --git a/src/analyzer/protocol/tcp/TCP_Reassembler.h b/src/analyzer/protocol/tcp/TCP_Reassembler.h
index b4c66128c0..105fa9dd46 100644
--- a/src/analyzer/protocol/tcp/TCP_Reassembler.h
+++ b/src/analyzer/protocol/tcp/TCP_Reassembler.h
@@ -22,10 +22,6 @@ class Analyzer;
 namespace tcp
 	{
 
-using TCP_Analyzer
-	[[deprecated("Remove in v5.1. Use zeek::packet_analysis::TCP::TCPSessionAdapter.")]] =
-		zeek::packet_analysis::TCP::TCPSessionAdapter;
-
 class TCP_Reassembler final : public Reassembler
 	{
 public:
diff --git a/src/analyzer/protocol/udp/UDP.h b/src/analyzer/protocol/udp/UDP.h
deleted file mode 100644
index 71efefd361..0000000000
--- a/src/analyzer/protocol/udp/UDP.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#warning                                                                                           \
-	"Remove in v5.1. This analyzer has been moved to packet analysis, use 'zeek/packet_analysis/protocol/udp/UDPSessionAdapter.h'."
-
-#include "zeek/packet_analysis/protocol/udp/UDPSessionAdapter.h"
-
-namespace zeek::analyzer::udp
-	{
-
-using UDP_Analyzer
-	[[deprecated("Remove in v5.1. Use zeek::packet_analysis::UDP::UDPSessionAdapter.")]] =
-		zeek::packet_analysis::UDP::UDPSessionAdapter;
-
-	} // namespace zeek::analyzer::udp