diff --git a/changelog.md b/changelog.md
index c680422..f5b799b 100644
--- a/changelog.md
+++ b/changelog.md
@@ -2,6 +2,9 @@
 
 ## Version 1.x
 
+### Version 1.5.2
+* Minor bug fixes.
+
 ### Version 1.5.1
 * Made lambidfy_kwargs an attribute of the celmech.Hamiltonian. This can be
   useful when creating Hamiltonians that involve special functions.
diff --git a/setup.py b/setup.py
index eb65145..1e5cf94 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@
     ghash = subprocess.check_output(["git", "rev-parse", "HEAD"]).decode("ascii")
     ghash_arg = "-DCELMECHGITHASH="+ghash.strip()
 except:
-    ghash_arg = "-DCELMECHGITHASH=48c20bb9c60201a271e4de1f7d26b21117cbaa30" #GITHASHAUTOUPDATE
+    ghash_arg = "-DCELMECHGITHASH=485554c96625e8d3f90d5dd7cfac3e6a29eea763" #GITHASHAUTOUPDATE
 
 extra_link_args=[]
 if sys.platform == 'darwin':
@@ -49,7 +49,7 @@
         install_requires = packages
 
 setup(name='celmech',
-    version='1.5.1',
+    version='1.5.2',
     description='Open source tools for celestial mechanics',
     url='http://github.com/shadden/celmech',
     author='Dan Tamayo, Sam Hadden',
diff --git a/src/disturbing_function.c b/src/disturbing_function.c
index aabca20..eadaa58 100644
--- a/src/disturbing_function.c
+++ b/src/disturbing_function.c
@@ -17,7 +17,7 @@
 #define str(s) #s
 
 const char* celmech_build_str = __DATE__ " " __TIME__; // Date and time build string. 
-const char* celmech_version_str = "1.5.1";         // **VERSIONLINE** This line gets updated automatically. Do not edit manually.
+const char* celmech_version_str = "1.5.2";         // **VERSIONLINE** This line gets updated automatically. Do not edit manually.
 const char* celmech_githash_str = STRINGIFY(CELMECHGITHASH);             // This line gets updated automatically. Do not edit manually.
 
 double laplace(double s, int i, int j, double a);
diff --git a/version.txt b/version.txt
index 26ca594..4cda8f1 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-1.5.1
+1.5.2