diff --git a/.gitignore b/.gitignore
index 92fab52..6770ae0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /smoldyn-2.61.zip
 /smoldyn-2.63.zip
 /smoldyn-2.65.zip
+/Smoldyn-2.66.1.tar.gz
diff --git a/smoldyn-create_soname.patch b/smoldyn-create_soname.patch
index 755cc1d..1100301 100644
--- a/smoldyn-create_soname.patch
+++ b/smoldyn-create_soname.patch
@@ -1,6 +1,6 @@
 --- CMakeLists.txt.fix_libpaths	2021-05-24 21:00:30.000000000 +0200
 +++ CMakeLists.txt	2021-06-02 18:44:48.679744434 +0200
-@@ -437,15 +437,15 @@
+@@ -485,14 +485,14 @@
  
      if (APPLE_BUILD)
          set_target_properties(smoldyn_shared PROPERTIES LINK_FLAGS "-framework Glut -framework OpenGL")
@@ -8,7 +8,6 @@
 -        set_target_properties(smoldyn_shared PROPERTIES PREFIX "lib")
 +    elseif (UNIX)
 +        set_target_properties(smoldyn_shared PROPERTIES PREFIX "lib" SOVERSION "${SMOLDYN_VERSION_MAJOR}" VERSION "${SMOLDYN_VERSION}")
-         set_target_properties(smoldyn_static PROPERTIES PREFIX "lib")
      endif ()
  endif ()
  
diff --git a/smoldyn.spec b/smoldyn.spec
index 8c4018d..2df7db3 100644
--- a/smoldyn.spec
+++ b/smoldyn.spec
@@ -8,8 +8,8 @@
 
 Name:  smoldyn
 Summary: A particle-based spatial stochastic simulator
-Version: 2.65
-Release: 5%{?dist}
+Version: 2.66.1
+Release: 1%{?dist}
 
 # The rxnparam.c and SurfaceParam.c source code files are in the public domain.
 #
@@ -22,7 +22,7 @@ Release: 5%{?dist}
 # source/libSteve/SFMT is licensed under the 'BSD 3-clause "New" or "Revised" License'
 License: LGPLv3+ and Public Domain and BSD
 URL:   http://www.smoldyn.org
-Source0: %{url}/%{name}-%{version}.zip
+Source0: https://github.com/ssandrews/Smoldyn/archive/refs/tags/v%{version}/Smoldyn-%{version}.tar.gz
 
 # Fix library paths according to the Fedora Project guidelines
 Patch0: %{name}-fix_libpaths.patch
@@ -89,7 +89,7 @@ Summary: %{name} libraries
 %package libs-devel
 Summary: %{name} libraries for development
 Requires: %{name}-libs%{?_isa} = %{version}-%{release}
-Provides: %{name}libs-static = 0:%{version}-%{release}
+Provides: %{name}-libs-static = 0:%{version}-%{release}
 %description libs-devel
 %{name} shared and static libraries for development.
 
@@ -101,7 +101,7 @@ Requires: python3-numpy
 %{name} libraries for Python.
 
 %prep
-%autosetup -n %{name}-%{version} -N
+%autosetup -n Smoldyn-%{version} -N
 %patch0 -p0 -b .fix_libpaths
 %patch1 -p0 -b .freeglut
 %patch2 -p0 -b .create_soname
@@ -202,6 +202,9 @@ popd
 %doc docs/*
 
 %changelog
+* Fri Oct 29 2021 Antonio Trande <sagitter@fedoraproject.org> - 2.66.1-1
+- Release 2.66.1
+
 * Fri Sep 10 2021 Miro Hrončok <mhroncok@redhat.com> - 2.65-5
 - Remove unused Python 3.9 byte cache
 
diff --git a/sources b/sources
index 65aa419..965668e 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (smoldyn-2.65.zip) = 9e08b6e226b57df84834ed43badff8e6bc52bec3fa6416588c194897fffd790df76f81310580d74453917a0744ada6fefbc20615ff6b153356e0bdf8ab1bdab9
+SHA512 (Smoldyn-2.66.1.tar.gz) = fae7baf33cb67db4844851e259d4b90cebb791a58e30d3bc6a9596fbd6c1e6dd22bc9381f21c364f0c07d78976489bd6f5b60d1ec93f6037b8bf4ca6d6fd04a6