diff --git a/ChangeLog b/ChangeLog
index 35ffd3ea31..e4d370d6b0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2293.	[build]		razvan
+	The library version numbers have been bumped up for the Kea 2.7.4
+	development release.
+	(Gitlab #3639)
+
 2292.	[doc]		tmark
 	Updated the ARM to include and explanation for why
 	the default values for 'calculate-tee-times' are
diff --git a/src/lib/asiolink/Makefile.am b/src/lib/asiolink/Makefile.am
index 21fbee30b3..3e59243a86 100644
--- a/src/lib/asiolink/Makefile.am
+++ b/src/lib/asiolink/Makefile.am
@@ -11,7 +11,7 @@ CLEANFILES = *.gcno *.gcda
 
 lib_LTLIBRARIES = libkea-asiolink.la
 
-libkea_asiolink_la_LDFLAGS = -no-undefined -version-info 81:0:0
+libkea_asiolink_la_LDFLAGS = -no-undefined -version-info 82:0:0
 libkea_asiolink_la_LDFLAGS += $(CRYPTO_LDFLAGS)
 
 libkea_asiolink_la_SOURCES  = asiolink.h
diff --git a/src/lib/config/Makefile.am b/src/lib/config/Makefile.am
index f6f898acf1..b74b2eaba3 100644
--- a/src/lib/config/Makefile.am
+++ b/src/lib/config/Makefile.am
@@ -36,7 +36,7 @@ libkea_cfgclient_la_LIBADD += $(top_builddir)/src/lib/util/libkea-util.la
 libkea_cfgclient_la_LIBADD += $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
 libkea_cfgclient_la_LIBADD += $(LOG4CPLUS_LIBS) $(CRYPTO_LIBS) $(BOOST_LIBS)
 
-libkea_cfgclient_la_LDFLAGS = -no-undefined -version-info 77:0:0
+libkea_cfgclient_la_LDFLAGS = -no-undefined -version-info 78:0:0
 libkea_cfgclient_la_LDFLAGS += $(CRYPTO_LDFLAGS)
 
 # The message file should be in the distribution.
diff --git a/src/lib/cryptolink/Makefile.am b/src/lib/cryptolink/Makefile.am
index 59bd8e0e40..c25bd54bfb 100644
--- a/src/lib/cryptolink/Makefile.am
+++ b/src/lib/cryptolink/Makefile.am
@@ -27,7 +27,7 @@ libkea_cryptolink_la_SOURCES += openssl_hmac.cc
 endif
 
 libkea_cryptolink_la_LDFLAGS = $(CRYPTO_LDFLAGS)
-libkea_cryptolink_la_LDFLAGS += -no-undefined -version-info 60:0:0
+libkea_cryptolink_la_LDFLAGS += -no-undefined -version-info 61:0:0
 libkea_cryptolink_la_LIBADD  = $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
 libkea_cryptolink_la_LIBADD += $(CRYPTO_LIBS)
 
diff --git a/src/lib/database/Makefile.am b/src/lib/database/Makefile.am
index c520d9337c..21d1eb423d 100644
--- a/src/lib/database/Makefile.am
+++ b/src/lib/database/Makefile.am
@@ -29,7 +29,7 @@ libkea_database_la_LIBADD += $(top_builddir)/src/lib/util/libkea-util.la
 libkea_database_la_LIBADD += $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
 libkea_database_la_LIBADD += $(LOG4CPLUS_LIBS) $(BOOST_LIBS)
 
-libkea_database_la_LDFLAGS = -no-undefined -version-info 72:0:0
+libkea_database_la_LDFLAGS = -no-undefined -version-info 73:0:0
 
 # If we want to get rid of all generated messages files, we need to use
 # make maintainer-clean. The proper way to introduce custom commands for
diff --git a/src/lib/dhcp/Makefile.am b/src/lib/dhcp/Makefile.am
index fb1442ca6f..6f6531fa93 100644
--- a/src/lib/dhcp/Makefile.am
+++ b/src/lib/dhcp/Makefile.am
@@ -87,7 +87,7 @@ libkea_dhcp___la_LIBADD += $(top_builddir)/src/lib/util/libkea-util.la
 libkea_dhcp___la_LIBADD += $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
 libkea_dhcp___la_LIBADD += $(BOOST_LIBS)
 libkea_dhcp___la_LIBADD += $(CRYPTO_LIBS)
-libkea_dhcp___la_LDFLAGS  = -no-undefined -version-info 103:0:0
+libkea_dhcp___la_LDFLAGS  = -no-undefined -version-info 104:0:0
 libkea_dhcp___la_LDFLAGS += $(CRYPTO_LDFLAGS)
 
 EXTRA_DIST  = README libdhcp++.dox
diff --git a/src/lib/dhcp/classify.cc b/src/lib/dhcp/classify.cc
index 86f6b5367f..828b137604 100644
--- a/src/lib/dhcp/classify.cc
+++ b/src/lib/dhcp/classify.cc
@@ -92,7 +92,7 @@ ClientClasses::fromElement(isc::data::ConstElementPtr cc_list) {
         for (auto i = 0; i < cc_list->size(); ++i) {
             auto cclass = cc_list->get(i);
             if (cclass->getType() != Element::string) {
-                isc_throw(BadValue, "elements of list must be valid strings"); 
+                isc_throw(BadValue, "elements of list must be valid strings");
             }
 
             static_cast<void>(insert(cclass->stringValue()));
diff --git a/src/lib/dhcp/tests/classify_unittest.cc b/src/lib/dhcp/tests/classify_unittest.cc
index 4c3be5ec9c..075af19547 100644
--- a/src/lib/dhcp/tests/classify_unittest.cc
+++ b/src/lib/dhcp/tests/classify_unittest.cc
@@ -243,7 +243,7 @@ TEST(ClassifyTest, ClientClassesFromElement) {
     EXPECT_FALSE(classes.contains("two"));
     EXPECT_TRUE(classes.contains("three"));
 
-    // Verify another invocation with an empty pointer is harmless. 
+    // Verify another invocation with an empty pointer is harmless.
     cclasses_element.reset();
     ASSERT_NO_THROW(classes.fromElement(cclasses_element));
     EXPECT_TRUE(classes.contains("three"));
diff --git a/src/lib/dhcpsrv/Makefile.am b/src/lib/dhcpsrv/Makefile.am
index cf960993d3..e7057a0f9e 100644
--- a/src/lib/dhcpsrv/Makefile.am
+++ b/src/lib/dhcpsrv/Makefile.am
@@ -198,7 +198,7 @@ libkea_dhcpsrv_la_LIBADD += $(top_builddir)/src/lib/util/libkea-util.la
 libkea_dhcpsrv_la_LIBADD += $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
 libkea_dhcpsrv_la_LIBADD += $(LOG4CPLUS_LIBS) $(CRYPTO_LIBS) $(BOOST_LIBS)
 
-libkea_dhcpsrv_la_LDFLAGS  = -no-undefined -version-info 122:0:0
+libkea_dhcpsrv_la_LDFLAGS  = -no-undefined -version-info 123:0:0
 libkea_dhcpsrv_la_LDFLAGS += $(CRYPTO_LDFLAGS)
 
 # The message file should be in the distribution
diff --git a/src/lib/hooks/Makefile.am b/src/lib/hooks/Makefile.am
index abc46355dc..9014c7007e 100644
--- a/src/lib/hooks/Makefile.am
+++ b/src/lib/hooks/Makefile.am
@@ -38,7 +38,7 @@ libkea_hooks_la_SOURCES += hooks_messages.cc hooks_messages.h
 
 libkea_hooks_la_CXXFLAGS = $(AM_CXXFLAGS)
 libkea_hooks_la_CPPFLAGS = $(AM_CPPFLAGS)
-libkea_hooks_la_LDFLAGS  = -no-undefined -version-info 111:0:0
+libkea_hooks_la_LDFLAGS  = -no-undefined -version-info 112:0:0
 libkea_hooks_la_LDFLAGS += $(AM_LDFLAGS)
 libkea_hooks_la_LIBADD  = $(top_builddir)/src/lib/cc/libkea-cc.la
 libkea_hooks_la_LIBADD += $(top_builddir)/src/lib/asiolink/libkea-asiolink.la
diff --git a/src/lib/hooks/hooks.h b/src/lib/hooks/hooks.h
index ce3a6ed0d2..e7dd61e010 100644
--- a/src/lib/hooks/hooks.h
+++ b/src/lib/hooks/hooks.h
@@ -12,8 +12,8 @@
 
 namespace {
 
-// Version 20703 of the hooks framework, set for Kea 2.7.3
-const int KEA_HOOKS_VERSION = 20703;
+// Version 20704 of the hooks framework, set for Kea 2.7.4
+const int KEA_HOOKS_VERSION = 20704;
 
 // Names of the framework functions.
 const char* const LOAD_FUNCTION_NAME = "load";
diff --git a/src/lib/http/Makefile.am b/src/lib/http/Makefile.am
index a8bb0c2c6d..5935b9e8db 100644
--- a/src/lib/http/Makefile.am
+++ b/src/lib/http/Makefile.am
@@ -47,7 +47,7 @@ libkea_http_la_SOURCES += basic_auth.cc basic_auth.h
 libkea_http_la_CXXFLAGS = $(AM_CXXFLAGS)
 libkea_http_la_CPPFLAGS = $(AM_CPPFLAGS)
 libkea_http_la_LDFLAGS  = $(AM_LDFLAGS)
-libkea_http_la_LDFLAGS += -no-undefined -version-info 82:0:0
+libkea_http_la_LDFLAGS += -no-undefined -version-info 83:0:0
 
 libkea_http_la_LIBADD  = $(top_builddir)/src/lib/dhcp/libkea-dhcp++.la
 libkea_http_la_LIBADD += $(top_builddir)/src/lib/hooks/libkea-hooks.la
diff --git a/src/lib/mysql/Makefile.am b/src/lib/mysql/Makefile.am
index 89553ed22d..71ee016d02 100644
--- a/src/lib/mysql/Makefile.am
+++ b/src/lib/mysql/Makefile.am
@@ -22,7 +22,7 @@ libkea_mysql_la_LIBADD += $(top_builddir)/src/lib/util/libkea-util.la
 libkea_mysql_la_LIBADD += $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
 libkea_mysql_la_LIBADD += $(LOG4CPLUS_LIBS) $(BOOST_LIBS) $(CRYPTO_LIBS)
 
-libkea_mysql_la_LDFLAGS = -no-undefined -version-info 82:0:0
+libkea_mysql_la_LDFLAGS = -no-undefined -version-info 83:0:0
 
 libkea_mysql_la_LDFLAGS += $(MYSQL_LIBS)
 
diff --git a/src/lib/pgsql/Makefile.am b/src/lib/pgsql/Makefile.am
index 4c99306a7d..caf35fc3ed 100644
--- a/src/lib/pgsql/Makefile.am
+++ b/src/lib/pgsql/Makefile.am
@@ -22,7 +22,7 @@ libkea_pgsql_la_LIBADD += $(top_builddir)/src/lib/util/libkea-util.la
 libkea_pgsql_la_LIBADD += $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
 libkea_pgsql_la_LIBADD += $(LOG4CPLUS_LIBS) $(BOOST_LIBS) $(CRYPTO_LIBS)
 
-libkea_pgsql_la_LDFLAGS = -no-undefined -version-info 82:0:0
+libkea_pgsql_la_LDFLAGS = -no-undefined -version-info 83:0:0
 
 libkea_pgsql_la_LDFLAGS += $(PGSQL_LIBS)
 
diff --git a/src/lib/process/Makefile.am b/src/lib/process/Makefile.am
index f7db06a209..9f95fa0c77 100644
--- a/src/lib/process/Makefile.am
+++ b/src/lib/process/Makefile.am
@@ -30,7 +30,7 @@ libkea_process_la_SOURCES += redact_config.cc redact_config.h
 libkea_process_la_CXXFLAGS = $(AM_CXXFLAGS)
 libkea_process_la_CPPFLAGS = $(AM_CPPFLAGS)
 libkea_process_la_LDFLAGS  = $(AM_LDFLAGS)
-libkea_process_la_LDFLAGS += -no-undefined -version-info 84:0:0
+libkea_process_la_LDFLAGS += -no-undefined -version-info 85:0:0
 
 libkea_process_la_LIBADD  = $(top_builddir)/src/lib/process/cfgrpt/libcfgrpt.la
 libkea_process_la_LIBADD += $(top_builddir)/src/lib/config/libkea-cfgclient.la
diff --git a/src/lib/util/Makefile.am b/src/lib/util/Makefile.am
index f630f90f90..9ffd0e2da3 100644
--- a/src/lib/util/Makefile.am
+++ b/src/lib/util/Makefile.am
@@ -44,7 +44,7 @@ libkea_util_la_SOURCES += encode/utf8.cc encode/utf8.h
 
 libkea_util_la_LIBADD = $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
 
-libkea_util_la_LDFLAGS  = -no-undefined -version-info 96:0:0
+libkea_util_la_LDFLAGS  = -no-undefined -version-info 97:0:0
 
 EXTRA_DIST = util.dox