diff --git a/CMakeLists.txt b/CMakeLists.txt
index b5a86a5..7b94037 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,7 +30,7 @@
 endif()
 
 set(POPPLER_MAJOR_VERSION "0")
-set(POPPLER_MINOR_VERSION "65")
+set(POPPLER_MINOR_VERSION "66")
 set(POPPLER_MICRO_VERSION "0")
 set(POPPLER_VERSION "${POPPLER_MAJOR_VERSION}.${POPPLER_MINOR_VERSION}.${POPPLER_MICRO_VERSION}")
 
@@ -490,7 +490,7 @@
 else()
 add_library(poppler ${poppler_SRCS})
 endif()
-set_target_properties(poppler PROPERTIES VERSION 76.0.0 SOVERSION 76)
+set_target_properties(poppler PROPERTIES VERSION 77.0.0 SOVERSION 77)
 if(MINGW)
     get_target_property(POPPLER_SOVERSION poppler SOVERSION)
     set_target_properties(poppler PROPERTIES SUFFIX "-${POPPLER_SOVERSION}${CMAKE_SHARED_LIBRARY_SUFFIX}")
diff --git a/NEWS b/NEWS
index 8e380f1..3282656 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,10 @@
+Release 0.66.0
+        core:
+         * Fix lots of security/leak issues found by oss-fuzz
+         * Splash: Optimize some files, making them 20% faster
+         * Splash: Correctly manipulate spot colors if SPOT_NCOMPS != 4
+         * Fix compilation with some strict compilers
+
 Release 0.65.0
         core:
          * SplashOutputDev: Add the invisible character check beginType3Char. Bug #106244
diff --git a/cpp/Doxyfile b/cpp/Doxyfile
index fe1a1ae..60c78a2 100644
--- a/cpp/Doxyfile
+++ b/cpp/Doxyfile
@@ -31,7 +31,7 @@
 # This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 0.65.0
+PROJECT_NUMBER         = 0.66.0
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
 # base path where the generated documentation will be put.
diff --git a/qt5/src/Doxyfile b/qt5/src/Doxyfile
index c43e4ce..cea1251 100644
--- a/qt5/src/Doxyfile
+++ b/qt5/src/Doxyfile
@@ -31,7 +31,7 @@
 # This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 0.65.0
+PROJECT_NUMBER         = 0.66.0
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
 # base path where the generated documentation will be put.